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Finding the Fourth Proportional to 86,763.80, 130,144.80 and 44,655.68

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Solution

The fourth proportional to 86,763.80, 130,144.80 and 44,655.68 is: 66,983.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,763.80 : 130,144.80 = 44,655.68 : x
  2. Step 2: Convert to fraction form
    86,763.80/130,144.80 = 44,655.68/x
  3. Step 3: Cross multiply
    86,763.80x = 130,144.80 × 44,655.68
  4. Step 4: Simplify right side
    86,763.80x = 5,811,704,542.46
  5. Step 5: Solve for x
    x = 5,811,704,542.46/86,763.80
  6. Step 6: Final answer
    x = 66,983.06

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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.