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Finding the Fourth Proportional to 70,129.97, 96,779.72 and 38,298.87

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Solution

The fourth proportional to 70,129.97, 96,779.72 and 38,298.87 is: 52,852.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,129.97 : 96,779.72 = 38,298.87 : x
  2. Step 2: Convert to fraction form
    70,129.97/96,779.72 = 38,298.87/x
  3. Step 3: Cross multiply
    70,129.97x = 96,779.72 × 38,298.87
  4. Step 4: Simplify right side
    70,129.97x = 3,706,553,723.42
  5. Step 5: Solve for x
    x = 3,706,553,723.42/70,129.97
  6. Step 6: Final answer
    x = 52,852.64

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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.