Home / 71,420.27-98,557.83-39,154.21

Finding the Fourth Proportional to 71,420.27, 98,557.83 and 39,154.21

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Solution

The fourth proportional to 71,420.27, 98,557.83 and 39,154.21 is: 54,031.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,420.27 : 98,557.83 = 39,154.21 : x
  2. Step 2: Convert to fraction form
    71,420.27/98,557.83 = 39,154.21/x
  3. Step 3: Cross multiply
    71,420.27x = 98,557.83 × 39,154.21
  4. Step 4: Simplify right side
    71,420.27x = 3,858,953,726.57
  5. Step 5: Solve for x
    x = 3,858,953,726.57/71,420.27
  6. Step 6: Final answer
    x = 54,031.64

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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.