Home / 86,438.00-129,672.70-42,064.79

Finding the Fourth Proportional to 86,438.00, 129,672.70 and 42,064.79

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Solution

The fourth proportional to 86,438.00, 129,672.70 and 42,064.79 is: 63,104.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,438.00 : 129,672.70 = 42,064.79 : x
  2. Step 2: Convert to fraction form
    86,438.00/129,672.70 = 42,064.79/x
  3. Step 3: Cross multiply
    86,438.00x = 129,672.70 × 42,064.79
  4. Step 4: Simplify right side
    86,438.00x = 5,454,654,140.71
  5. Step 5: Solve for x
    x = 5,454,654,140.71/86,438.00
  6. Step 6: Final answer
    x = 63,104.81

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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.