Home / 86,508.28-129,783.38-42,124.93

Finding the Fourth Proportional to 86,508.28, 129,783.38 and 42,124.93

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Solution

The fourth proportional to 86,508.28, 129,783.38 and 42,124.93 is: 63,197.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,508.28 : 129,783.38 = 42,124.93 : x
  2. Step 2: Convert to fraction form
    86,508.28/129,783.38 = 42,124.93/x
  3. Step 3: Cross multiply
    86,508.28x = 129,783.38 × 42,124.93
  4. Step 4: Simplify right side
    86,508.28x = 5,467,115,797.66
  5. Step 5: Solve for x
    x = 5,467,115,797.66/86,508.28
  6. Step 6: Final answer
    x = 63,197.60

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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.