Home / 82,071.32-123,120.14-34,686.87

Finding the Fourth Proportional to 82,071.32, 123,120.14 and 34,686.87

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Solution

The fourth proportional to 82,071.32, 123,120.14 and 34,686.87 is: 52,035.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,071.32 : 123,120.14 = 34,686.87 : x
  2. Step 2: Convert to fraction form
    82,071.32/123,120.14 = 34,686.87/x
  3. Step 3: Cross multiply
    82,071.32x = 123,120.14 × 34,686.87
  4. Step 4: Simplify right side
    82,071.32x = 4,270,652,117.13
  5. Step 5: Solve for x
    x = 4,270,652,117.13/82,071.32
  6. Step 6: Final answer
    x = 52,035.87

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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.