Home / 83,715.66-115,557.94-55,430.46

Finding the Fourth Proportional to 83,715.66, 115,557.94 and 55,430.46

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Solution

The fourth proportional to 83,715.66, 115,557.94 and 55,430.46 is: 76,514.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,715.66 : 115,557.94 = 55,430.46 : x
  2. Step 2: Convert to fraction form
    83,715.66/115,557.94 = 55,430.46/x
  3. Step 3: Cross multiply
    83,715.66x = 115,557.94 × 55,430.46
  4. Step 4: Simplify right side
    83,715.66x = 6,405,429,770.85
  5. Step 5: Solve for x
    x = 6,405,429,770.85/83,715.66
  6. Step 6: Final answer
    x = 76,514.12

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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.