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Finding the Fourth Proportional to 70,039.80, 96,655.62 and 38,209.35

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Solution

The fourth proportional to 70,039.80, 96,655.62 and 38,209.35 is: 52,729.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,039.80 : 96,655.62 = 38,209.35 : x
  2. Step 2: Convert to fraction form
    70,039.80/96,655.62 = 38,209.35/x
  3. Step 3: Cross multiply
    70,039.80x = 96,655.62 × 38,209.35
  4. Step 4: Simplify right side
    70,039.80x = 3,693,148,414.05
  5. Step 5: Solve for x
    x = 3,693,148,414.05/70,039.80
  6. Step 6: Final answer
    x = 52,729.28

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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.