Home / 77,942.90-107,560.86-42,132.98

Finding the Fourth Proportional to 77,942.90, 107,560.86 and 42,132.98

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Solution

The fourth proportional to 77,942.90, 107,560.86 and 42,132.98 is: 58,143.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,942.90 : 107,560.86 = 42,132.98 : x
  2. Step 2: Convert to fraction form
    77,942.90/107,560.86 = 42,132.98/x
  3. Step 3: Cross multiply
    77,942.90x = 107,560.86 × 42,132.98
  4. Step 4: Simplify right side
    77,942.90x = 4,531,859,563.16
  5. Step 5: Solve for x
    x = 4,531,859,563.16/77,942.90
  6. Step 6: Final answer
    x = 58,143.33

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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.