Home / 86,354.13-129,548.67-36,434.34

Finding the Fourth Proportional to 86,354.13, 129,548.67 and 36,434.34

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Solution

The fourth proportional to 86,354.13, 129,548.67 and 36,434.34 is: 54,658.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,354.13 : 129,548.67 = 36,434.34 : x
  2. Step 2: Convert to fraction form
    86,354.13/129,548.67 = 36,434.34/x
  3. Step 3: Cross multiply
    86,354.13x = 129,548.67 × 36,434.34
  4. Step 4: Simplify right side
    86,354.13x = 4,720,020,152.70
  5. Step 5: Solve for x
    x = 4,720,020,152.70/86,354.13
  6. Step 6: Final answer
    x = 54,658.88

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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.