Home / 84,756.96-127,139.04-28,598.40

Finding the Fourth Proportional to 84,756.96, 127,139.04 and 28,598.40

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Solution

The fourth proportional to 84,756.96, 127,139.04 and 28,598.40 is: 42,898.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,756.96 : 127,139.04 = 28,598.40 : x
  2. Step 2: Convert to fraction form
    84,756.96/127,139.04 = 28,598.40/x
  3. Step 3: Cross multiply
    84,756.96x = 127,139.04 × 28,598.40
  4. Step 4: Simplify right side
    84,756.96x = 3,635,973,121.54
  5. Step 5: Solve for x
    x = 3,635,973,121.54/84,756.96
  6. Step 6: Final answer
    x = 42,898.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.