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Finding the Fourth Proportional to 84,197.68, 126,316.71 and 28,038.31

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Solution

The fourth proportional to 84,197.68, 126,316.71 and 28,038.31 is: 42,064.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,197.68 : 126,316.71 = 28,038.31 : x
  2. Step 2: Convert to fraction form
    84,197.68/126,316.71 = 28,038.31/x
  3. Step 3: Cross multiply
    84,197.68x = 126,316.71 × 28,038.31
  4. Step 4: Simplify right side
    84,197.68x = 3,541,707,073.16
  5. Step 5: Solve for x
    x = 3,541,707,073.16/84,197.68
  6. Step 6: Final answer
    x = 42,064.19

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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.