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Finding the Fourth Proportional to 72,992.70, 109,492.65 and 38,000.70

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Solution

The fourth proportional to 72,992.70, 109,492.65 and 38,000.70 is: 57,002.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,992.70 : 109,492.65 = 38,000.70 : x
  2. Step 2: Convert to fraction form
    72,992.70/109,492.65 = 38,000.70/x
  3. Step 3: Cross multiply
    72,992.70x = 109,492.65 × 38,000.70
  4. Step 4: Simplify right side
    72,992.70x = 4,160,797,344.86
  5. Step 5: Solve for x
    x = 4,160,797,344.86/72,992.70
  6. Step 6: Final answer
    x = 57,002.92

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1.5x scale

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.