Home / 86,019.60-129,045.72-29,857.52

Finding the Fourth Proportional to 86,019.60, 129,045.72 and 29,857.52

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Solution

The fourth proportional to 86,019.60, 129,045.72 and 29,857.52 is: 44,791.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,019.60 : 129,045.72 = 29,857.52 : x
  2. Step 2: Convert to fraction form
    86,019.60/129,045.72 = 29,857.52/x
  3. Step 3: Cross multiply
    86,019.60x = 129,045.72 × 29,857.52
  4. Step 4: Simplify right side
    86,019.60x = 3,852,985,165.81
  5. Step 5: Solve for x
    x = 3,852,985,165.81/86,019.60
  6. Step 6: Final answer
    x = 44,791.94

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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.