Home / 77,005.92-115,398.72-34,781.16

Finding the Fourth Proportional to 77,005.92, 115,398.72 and 34,781.16

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Solution

The fourth proportional to 77,005.92, 115,398.72 and 34,781.16 is: 52,121.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,005.92 : 115,398.72 = 34,781.16 : x
  2. Step 2: Convert to fraction form
    77,005.92/115,398.72 = 34,781.16/x
  3. Step 3: Cross multiply
    77,005.92x = 115,398.72 × 34,781.16
  4. Step 4: Simplify right side
    77,005.92x = 4,013,701,344.12
  5. Step 5: Solve for x
    x = 4,013,701,344.12/77,005.92
  6. Step 6: Final answer
    x = 52,121.98

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1.5x scale

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.