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Finding the Fourth Proportional to 86,373.46, 129,541.83 and 36,434.26

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Solution

The fourth proportional to 86,373.46, 129,541.83 and 36,434.26 is: 54,643.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,373.46 : 129,541.83 = 36,434.26 : x
  2. Step 2: Convert to fraction form
    86,373.46/129,541.83 = 36,434.26/x
  3. Step 3: Cross multiply
    86,373.46x = 129,541.83 × 36,434.26
  4. Step 4: Simplify right side
    86,373.46x = 4,719,760,715.10
  5. Step 5: Solve for x
    x = 4,719,760,715.10/86,373.46
  6. Step 6: Final answer
    x = 54,643.65

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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.