Home / 86,720.56-129,977.30-44,620.81

Finding the Fourth Proportional to 86,720.56, 129,977.30 and 44,620.81

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Solution

The fourth proportional to 86,720.56, 129,977.30 and 44,620.81 is: 66,877.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,720.56 : 129,977.30 = 44,620.81 : x
  2. Step 2: Convert to fraction form
    86,720.56/129,977.30 = 44,620.81/x
  3. Step 3: Cross multiply
    86,720.56x = 129,977.30 × 44,620.81
  4. Step 4: Simplify right side
    86,720.56x = 5,799,692,407.61
  5. Step 5: Solve for x
    x = 5,799,692,407.61/86,720.56
  6. Step 6: Final answer
    x = 66,877.94

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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.