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Finding the Fourth Proportional to 85,958.97, 129,012.26 and 48,555.78

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Solution

The fourth proportional to 85,958.97, 129,012.26 and 48,555.78 is: 72,875.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,958.97 : 129,012.26 = 48,555.78 : x
  2. Step 2: Convert to fraction form
    85,958.97/129,012.26 = 48,555.78/x
  3. Step 3: Cross multiply
    85,958.97x = 129,012.26 × 48,555.78
  4. Step 4: Simplify right side
    85,958.97x = 6,264,290,671.08
  5. Step 5: Solve for x
    x = 6,264,290,671.08/85,958.97
  6. Step 6: Final answer
    x = 72,875.36

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1.5x scale

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.