Home / 86,528.96-129,767.52-31,112

Finding the Fourth Proportional to 86,528.96, 129,767.52 and 31,112

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Solution

The fourth proportional to 86,528.96, 129,767.52 and 31,112 is: 46,658.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,528.96 : 129,767.52 = 31,112 : x
  2. Step 2: Convert to fraction form
    86,528.96/129,767.52 = 31,112/x
  3. Step 3: Cross multiply
    86,528.96x = 129,767.52 × 31,112
  4. Step 4: Simplify right side
    86,528.96x = 4,037,327,082.24
  5. Step 5: Solve for x
    x = 4,037,327,082.24/86,528.96
  6. Step 6: Final answer
    x = 46,658.68

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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.