Home / 76,545.72-105,630.66-42,553.62

Finding the Fourth Proportional to 76,545.72, 105,630.66 and 42,553.62

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Solution

The fourth proportional to 76,545.72, 105,630.66 and 42,553.62 is: 58,722.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,545.72 : 105,630.66 = 42,553.62 : x
  2. Step 2: Convert to fraction form
    76,545.72/105,630.66 = 42,553.62/x
  3. Step 3: Cross multiply
    76,545.72x = 105,630.66 × 42,553.62
  4. Step 4: Simplify right side
    76,545.72x = 4,494,966,965.99
  5. Step 5: Solve for x
    x = 4,494,966,965.99/76,545.72
  6. Step 6: Final answer
    x = 58,722.64

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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.