Home / 39,359,261.28-54,316,134.08-21,718,948.40

Finding the Fourth Proportional to 39,359,261.28, 54,316,134.08 and 21,718,948.40

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Solution

The fourth proportional to 39,359,261.28, 54,316,134.08 and 21,718,948.40 is: 29,972,343.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,359,261.28 : 54,316,134.08 = 21,718,948.40 : x
  2. Step 2: Convert to fraction form
    39,359,261.28/54,316,134.08 = 21,718,948.40/x
  3. Step 3: Cross multiply
    39,359,261.28x = 54,316,134.08 × 21,718,948.40
  4. Step 4: Simplify right side
    39,359,261.28x = 1,179,689,313,371,001.25
  5. Step 5: Solve for x
    x = 1,179,689,313,371,001.25/39,359,261.28
  6. Step 6: Final answer
    x = 29,972,343.87

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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.