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Finding the Fourth Proportional to 76,372.79, 114,423.65 and 31,901.68

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Solution

The fourth proportional to 76,372.79, 114,423.65 and 31,901.68 is: 47,795.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,372.79 : 114,423.65 = 31,901.68 : x
  2. Step 2: Convert to fraction form
    76,372.79/114,423.65 = 31,901.68/x
  3. Step 3: Cross multiply
    76,372.79x = 114,423.65 × 31,901.68
  4. Step 4: Simplify right side
    76,372.79x = 3,650,306,221.16
  5. Step 5: Solve for x
    x = 3,650,306,221.16/76,372.79
  6. Step 6: Final answer
    x = 47,795.90

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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.