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Finding the Fourth Proportional to 67,878.80, 101,731.80 and 60,448.40

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Solution

The fourth proportional to 67,878.80, 101,731.80 and 60,448.40 is: 90,595.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,878.80 : 101,731.80 = 60,448.40 : x
  2. Step 2: Convert to fraction form
    67,878.80/101,731.80 = 60,448.40/x
  3. Step 3: Cross multiply
    67,878.80x = 101,731.80 × 60,448.40
  4. Step 4: Simplify right side
    67,878.80x = 6,149,524,539.12
  5. Step 5: Solve for x
    x = 6,149,524,539.12/67,878.80
  6. Step 6: Final answer
    x = 90,595.66

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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.