Home / 81,740.68-122,548.88-42,272.64

Finding the Fourth Proportional to 81,740.68, 122,548.88 and 42,272.64

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Solution

The fourth proportional to 81,740.68, 122,548.88 and 42,272.64 is: 63,376.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,740.68 : 122,548.88 = 42,272.64 : x
  2. Step 2: Convert to fraction form
    81,740.68/122,548.88 = 42,272.64/x
  3. Step 3: Cross multiply
    81,740.68x = 122,548.88 × 42,272.64
  4. Step 4: Simplify right side
    81,740.68x = 5,180,464,686.64
  5. Step 5: Solve for x
    x = 5,180,464,686.64/81,740.68
  6. Step 6: Final answer
    x = 63,376.82

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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.