Home / 53,931.30-80,724.15-28,909.86

Finding the Fourth Proportional to 53,931.30, 80,724.15 and 28,909.86

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Solution

The fourth proportional to 53,931.30, 80,724.15 and 28,909.86 is: 43,272.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,931.30 : 80,724.15 = 28,909.86 : x
  2. Step 2: Convert to fraction form
    53,931.30/80,724.15 = 28,909.86/x
  3. Step 3: Cross multiply
    53,931.30x = 80,724.15 × 28,909.86
  4. Step 4: Simplify right side
    53,931.30x = 2,333,723,875.12
  5. Step 5: Solve for x
    x = 2,333,723,875.12/53,931.30
  6. Step 6: Final answer
    x = 43,272.16

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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.