Home / 39,406,980,139.76-54,381,615,416.52-21,342,497,191.76

Finding the Fourth Proportional to 39,406,980,139.76, 54,381,615,416.52 and 21,342,497,191.76

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Solution

The fourth proportional to 39,406,980,139.76, 54,381,615,416.52 and 21,342,497,191.76 is: 29,452,636,822.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,406,980,139.76 : 54,381,615,416.52 = 21,342,497,191.76 : x
  2. Step 2: Convert to fraction form
    39,406,980,139.76/54,381,615,416.52 = 21,342,497,191.76/x
  3. Step 3: Cross multiply
    39,406,980,139.76x = 54,381,615,416.52 × 21,342,497,191.76
  4. Step 4: Simplify right side
    39,406,980,139.76x = 1,160,639,474,310,450,249,728
  5. Step 5: Solve for x
    x = 1,160,639,474,310,450,249,728/39,406,980,139.76
  6. Step 6: Final answer
    x = 29,452,636,822.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.