Home / 66,560.80-99,711.60-40,187.20

Finding the Fourth Proportional to 66,560.80, 99,711.60 and 40,187.20

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Solution

The fourth proportional to 66,560.80, 99,711.60 and 40,187.20 is: 60,202.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,560.80 : 99,711.60 = 40,187.20 : x
  2. Step 2: Convert to fraction form
    66,560.80/99,711.60 = 40,187.20/x
  3. Step 3: Cross multiply
    66,560.80x = 99,711.60 × 40,187.20
  4. Step 4: Simplify right side
    66,560.80x = 4,007,130,011.52
  5. Step 5: Solve for x
    x = 4,007,130,011.52/66,560.80
  6. Step 6: Final answer
    x = 60,202.55

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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.