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Finding the Fourth Proportional to 77,715.20, 116,572.80 and 59,052.80

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Solution

The fourth proportional to 77,715.20, 116,572.80 and 59,052.80 is: 88,579.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,715.20 : 116,572.80 = 59,052.80 : x
  2. Step 2: Convert to fraction form
    77,715.20/116,572.80 = 59,052.80/x
  3. Step 3: Cross multiply
    77,715.20x = 116,572.80 × 59,052.80
  4. Step 4: Simplify right side
    77,715.20x = 6,883,950,243.84
  5. Step 5: Solve for x
    x = 6,883,950,243.84/77,715.20
  6. Step 6: Final answer
    x = 88,579.20

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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.