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Finding the Fourth Proportional to 76,306.64, 105,281.64 and 60,123.76

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Solution

The fourth proportional to 76,306.64, 105,281.64 and 60,123.76 is: 82,953.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,306.64 : 105,281.64 = 60,123.76 : x
  2. Step 2: Convert to fraction form
    76,306.64/105,281.64 = 60,123.76/x
  3. Step 3: Cross multiply
    76,306.64x = 105,281.64 × 60,123.76
  4. Step 4: Simplify right side
    76,306.64x = 6,329,927,792.56
  5. Step 5: Solve for x
    x = 6,329,927,792.56/76,306.64
  6. Step 6: Final answer
    x = 82,953.83

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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.