Home / 86,317.11-129,431.52-39,529.89

Finding the Fourth Proportional to 86,317.11, 129,431.52 and 39,529.89

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Solution

The fourth proportional to 86,317.11, 129,431.52 and 39,529.89 is: 59,274.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,317.11 : 129,431.52 = 39,529.89 : x
  2. Step 2: Convert to fraction form
    86,317.11/129,431.52 = 39,529.89/x
  3. Step 3: Cross multiply
    86,317.11x = 129,431.52 × 39,529.89
  4. Step 4: Simplify right side
    86,317.11x = 5,116,413,748.13
  5. Step 5: Solve for x
    x = 5,116,413,748.13/86,317.11
  6. Step 6: Final answer
    x = 59,274.62

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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.