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Finding the Fourth Proportional to 64,710.88, 89,279.60 and 52,753.60

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Solution

The fourth proportional to 64,710.88, 89,279.60 and 52,753.60 is: 72,782.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,710.88 : 89,279.60 = 52,753.60 : x
  2. Step 2: Convert to fraction form
    64,710.88/89,279.60 = 52,753.60/x
  3. Step 3: Cross multiply
    64,710.88x = 89,279.60 × 52,753.60
  4. Step 4: Simplify right side
    64,710.88x = 4,709,820,306.56
  5. Step 5: Solve for x
    x = 4,709,820,306.56/64,710.88
  6. Step 6: Final answer
    x = 72,782.51

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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.