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Finding the Fourth Proportional to 68,777.76, 102,700.92 and 54,578.40

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Solution

The fourth proportional to 68,777.76, 102,700.92 and 54,578.40 is: 81,498.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,777.76 : 102,700.92 = 54,578.40 : x
  2. Step 2: Convert to fraction form
    68,777.76/102,700.92 = 54,578.40/x
  3. Step 3: Cross multiply
    68,777.76x = 102,700.92 × 54,578.40
  4. Step 4: Simplify right side
    68,777.76x = 5,605,251,892.13
  5. Step 5: Solve for x
    x = 5,605,251,892.13/68,777.76
  6. Step 6: Final answer
    x = 81,498.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.