Home / 71,428.05-98,572.05-39,160.53

Finding the Fourth Proportional to 71,428.05, 98,572.05 and 39,160.53

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Solution

The fourth proportional to 71,428.05, 98,572.05 and 39,160.53 is: 54,042.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,428.05 : 98,572.05 = 39,160.53 : x
  2. Step 2: Convert to fraction form
    71,428.05/98,572.05 = 39,160.53/x
  3. Step 3: Cross multiply
    71,428.05x = 98,572.05 × 39,160.53
  4. Step 4: Simplify right side
    71,428.05x = 3,860,133,721.19
  5. Step 5: Solve for x
    x = 3,860,133,721.19/71,428.05
  6. Step 6: Final answer
    x = 54,042.27

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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.