Home / 91,002.72-125,549.64-55,179.68

Finding the Fourth Proportional to 91,002.72, 125,549.64 and 55,179.68

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Solution

The fourth proportional to 91,002.72, 125,549.64 and 55,179.68 is: 76,127.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,002.72 : 125,549.64 = 55,179.68 : x
  2. Step 2: Convert to fraction form
    91,002.72/125,549.64 = 55,179.68/x
  3. Step 3: Cross multiply
    91,002.72x = 125,549.64 × 55,179.68
  4. Step 4: Simplify right side
    91,002.72x = 6,927,788,959.32
  5. Step 5: Solve for x
    x = 6,927,788,959.32/91,002.72
  6. Step 6: Final answer
    x = 76,127.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.