Home / 84,613.11-126,830.34-28,399.92

Finding the Fourth Proportional to 84,613.11, 126,830.34 and 28,399.92

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Solution

The fourth proportional to 84,613.11, 126,830.34 and 28,399.92 is: 42,569.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,613.11 : 126,830.34 = 28,399.92 : x
  2. Step 2: Convert to fraction form
    84,613.11/126,830.34 = 28,399.92/x
  3. Step 3: Cross multiply
    84,613.11x = 126,830.34 × 28,399.92
  4. Step 4: Simplify right side
    84,613.11x = 3,601,971,509.57
  5. Step 5: Solve for x
    x = 3,601,971,509.57/84,613.11
  6. Step 6: Final answer
    x = 42,569.90

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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.