Home / 90,005.76-124,220.16-67,610.88

Finding the Fourth Proportional to 90,005.76, 124,220.16 and 67,610.88

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Solution

The fourth proportional to 90,005.76, 124,220.16 and 67,610.88 is: 93,312.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,005.76 : 124,220.16 = 67,610.88 : x
  2. Step 2: Convert to fraction form
    90,005.76/124,220.16 = 67,610.88/x
  3. Step 3: Cross multiply
    90,005.76x = 124,220.16 × 67,610.88
  4. Step 4: Simplify right side
    90,005.76x = 8,398,634,331.34
  5. Step 5: Solve for x
    x = 8,398,634,331.34/90,005.76
  6. Step 6: Final answer
    x = 93,312.19

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1.5x scale

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.