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Finding the Fourth Proportional to 77,575.65, 116,359.62 and 45,572.55

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Solution

The fourth proportional to 77,575.65, 116,359.62 and 45,572.55 is: 68,356.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,575.65 : 116,359.62 = 45,572.55 : x
  2. Step 2: Convert to fraction form
    77,575.65/116,359.62 = 45,572.55/x
  3. Step 3: Cross multiply
    77,575.65x = 116,359.62 × 45,572.55
  4. Step 4: Simplify right side
    77,575.65x = 5,302,804,600.43
  5. Step 5: Solve for x
    x = 5,302,804,600.43/77,575.65
  6. Step 6: Final answer
    x = 68,356.56

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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.