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Finding the Fourth Proportional to 68,130.80, 102,001.80 and 52,449.20

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Solution

The fourth proportional to 68,130.80, 102,001.80 and 52,449.20 is: 78,524.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,130.80 : 102,001.80 = 52,449.20 : x
  2. Step 2: Convert to fraction form
    68,130.80/102,001.80 = 52,449.20/x
  3. Step 3: Cross multiply
    68,130.80x = 102,001.80 × 52,449.20
  4. Step 4: Simplify right side
    68,130.80x = 5,349,912,808.56
  5. Step 5: Solve for x
    x = 5,349,912,808.56/68,130.80
  6. Step 6: Final answer
    x = 78,524.14

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1.5x scale

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.