Home / 57,103.26-78,802.68-30,909.24

Finding the Fourth Proportional to 57,103.26, 78,802.68 and 30,909.24

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Solution

The fourth proportional to 57,103.26, 78,802.68 and 30,909.24 is: 42,654.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,103.26 : 78,802.68 = 30,909.24 : x
  2. Step 2: Convert to fraction form
    57,103.26/78,802.68 = 30,909.24/x
  3. Step 3: Cross multiply
    57,103.26x = 78,802.68 × 30,909.24
  4. Step 4: Simplify right side
    57,103.26x = 2,435,730,948.76
  5. Step 5: Solve for x
    x = 2,435,730,948.76/57,103.26
  6. Step 6: Final answer
    x = 42,654.85

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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.