Home / 86,350.67-129,543.47-36,430.88

Finding the Fourth Proportional to 86,350.67, 129,543.47 and 36,430.88

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Solution

The fourth proportional to 86,350.67, 129,543.47 and 36,430.88 is: 54,653.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,350.67 : 129,543.47 = 36,430.88 : x
  2. Step 2: Convert to fraction form
    86,350.67/129,543.47 = 36,430.88/x
  3. Step 3: Cross multiply
    86,350.67x = 129,543.47 × 36,430.88
  4. Step 4: Simplify right side
    86,350.67x = 4,719,381,780.48
  5. Step 5: Solve for x
    x = 4,719,381,780.48/86,350.67
  6. Step 6: Final answer
    x = 54,653.68

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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.