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Finding the Fourth Proportional to 77,068.80, 115,624.80 and 37,627.20

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Solution

The fourth proportional to 77,068.80, 115,624.80 and 37,627.20 is: 56,451.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,068.80 : 115,624.80 = 37,627.20 : x
  2. Step 2: Convert to fraction form
    77,068.80/115,624.80 = 37,627.20/x
  3. Step 3: Cross multiply
    77,068.80x = 115,624.80 × 37,627.20
  4. Step 4: Simplify right side
    77,068.80x = 4,350,637,474.56
  5. Step 5: Solve for x
    x = 4,350,637,474.56/77,068.80
  6. Step 6: Final answer
    x = 56,451.35

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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.