Home / 90,787.47-136,203.08-28,457.97

Finding the Fourth Proportional to 90,787.47, 136,203.08 and 28,457.97

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Solution

The fourth proportional to 90,787.47, 136,203.08 and 28,457.97 is: 42,693.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,787.47 : 136,203.08 = 28,457.97 : x
  2. Step 2: Convert to fraction form
    90,787.47/136,203.08 = 28,457.97/x
  3. Step 3: Cross multiply
    90,787.47x = 136,203.08 × 28,457.97
  4. Step 4: Simplify right side
    90,787.47x = 3,876,063,164.55
  5. Step 5: Solve for x
    x = 3,876,063,164.55/90,787.47
  6. Step 6: Final answer
    x = 42,693.81

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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.