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Finding the Fourth Proportional to 81,352.80, 122,029.20 and 59,061.60

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Solution

The fourth proportional to 81,352.80, 122,029.20 and 59,061.60 is: 88,592.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,352.80 : 122,029.20 = 59,061.60 : x
  2. Step 2: Convert to fraction form
    81,352.80/122,029.20 = 59,061.60/x
  3. Step 3: Cross multiply
    81,352.80x = 122,029.20 × 59,061.60
  4. Step 4: Simplify right side
    81,352.80x = 7,207,239,798.72
  5. Step 5: Solve for x
    x = 7,207,239,798.72/81,352.80
  6. Step 6: Final answer
    x = 88,592.40

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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.