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Finding the Fourth Proportional to 76,545.48, 105,624.48 and 42,555.42

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Solution

The fourth proportional to 76,545.48, 105,624.48 and 42,555.42 is: 58,721.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,545.48 : 105,624.48 = 42,555.42 : x
  2. Step 2: Convert to fraction form
    76,545.48/105,624.48 = 42,555.42/x
  3. Step 3: Cross multiply
    76,545.48x = 105,624.48 × 42,555.42
  4. Step 4: Simplify right side
    76,545.48x = 4,494,894,108.68
  5. Step 5: Solve for x
    x = 4,494,894,108.68/76,545.48
  6. Step 6: Final answer
    x = 58,721.88

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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.