Home / 39,281,909.40-54,210,724.40-21,878,262.36

Finding the Fourth Proportional to 39,281,909.40, 54,210,724.40 and 21,878,262.36

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Solution

The fourth proportional to 39,281,909.40, 54,210,724.40 and 21,878,262.36 is: 30,192,942.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,281,909.40 : 54,210,724.40 = 21,878,262.36 : x
  2. Step 2: Convert to fraction form
    39,281,909.40/54,210,724.40 = 21,878,262.36/x
  3. Step 3: Cross multiply
    39,281,909.40x = 54,210,724.40 × 21,878,262.36
  4. Step 4: Simplify right side
    39,281,909.40x = 1,186,036,451,148,853.50
  5. Step 5: Solve for x
    x = 1,186,036,451,148,853.50/39,281,909.40
  6. Step 6: Final answer
    x = 30,192,942.99

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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.