Home / 78,331.85-108,098.09-42,521.88

Finding the Fourth Proportional to 78,331.85, 108,098.09 and 42,521.88

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Solution

The fourth proportional to 78,331.85, 108,098.09 and 42,521.88 is: 58,680.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,331.85 : 108,098.09 = 42,521.88 : x
  2. Step 2: Convert to fraction form
    78,331.85/108,098.09 = 42,521.88/x
  3. Step 3: Cross multiply
    78,331.85x = 108,098.09 × 42,521.88
  4. Step 4: Simplify right side
    78,331.85x = 4,596,533,798.60
  5. Step 5: Solve for x
    x = 4,596,533,798.60/78,331.85
  6. Step 6: Final answer
    x = 58,680.27

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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.