Home / 89,677.20-123,683.88-55,666.48

Finding the Fourth Proportional to 89,677.20, 123,683.88 and 55,666.48

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Solution

The fourth proportional to 89,677.20, 123,683.88 and 55,666.48 is: 76,775.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,677.20 : 123,683.88 = 55,666.48 : x
  2. Step 2: Convert to fraction form
    89,677.20/123,683.88 = 55,666.48/x
  3. Step 3: Cross multiply
    89,677.20x = 123,683.88 × 55,666.48
  4. Step 4: Simplify right side
    89,677.20x = 6,885,046,232.34
  5. Step 5: Solve for x
    x = 6,885,046,232.34/89,677.20
  6. Step 6: Final answer
    x = 76,775.88

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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.