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Finding the Fourth Proportional to 67,487.77, 93,144.54 and 39,209.86

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Solution

The fourth proportional to 67,487.77, 93,144.54 and 39,209.86 is: 54,116.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,487.77 : 93,144.54 = 39,209.86 : x
  2. Step 2: Convert to fraction form
    67,487.77/93,144.54 = 39,209.86/x
  3. Step 3: Cross multiply
    67,487.77x = 93,144.54 × 39,209.86
  4. Step 4: Simplify right side
    67,487.77x = 3,652,184,373.16
  5. Step 5: Solve for x
    x = 3,652,184,373.16/67,487.77
  6. Step 6: Final answer
    x = 54,116.24

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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.