Home / 77,942.40-107,560.17-42,132.48

Finding the Fourth Proportional to 77,942.40, 107,560.17 and 42,132.48

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Solution

The fourth proportional to 77,942.40, 107,560.17 and 42,132.48 is: 58,142.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,942.40 : 107,560.17 = 42,132.48 : x
  2. Step 2: Convert to fraction form
    77,942.40/107,560.17 = 42,132.48/x
  3. Step 3: Cross multiply
    77,942.40x = 107,560.17 × 42,132.48
  4. Step 4: Simplify right side
    77,942.40x = 4,531,776,711.32
  5. Step 5: Solve for x
    x = 4,531,776,711.32/77,942.40
  6. Step 6: Final answer
    x = 58,142.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.