Home / 82,890.06-124,335.95-66,355.20

Finding the Fourth Proportional to 82,890.06, 124,335.95 and 66,355.20

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Solution

The fourth proportional to 82,890.06, 124,335.95 and 66,355.20 is: 99,533.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,890.06 : 124,335.95 = 66,355.20 : x
  2. Step 2: Convert to fraction form
    82,890.06/124,335.95 = 66,355.20/x
  3. Step 3: Cross multiply
    82,890.06x = 124,335.95 × 66,355.20
  4. Step 4: Simplify right side
    82,890.06x = 8,250,336,497.66
  5. Step 5: Solve for x
    x = 8,250,336,497.66/82,890.06
  6. Step 6: Final answer
    x = 99,533.48

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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.