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Finding the Fourth Proportional to 70,909.98, 97,855.40 and 38,644.58

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Solution

The fourth proportional to 70,909.98, 97,855.40 and 38,644.58 is: 53,329.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,909.98 : 97,855.40 = 38,644.58 : x
  2. Step 2: Convert to fraction form
    70,909.98/97,855.40 = 38,644.58/x
  3. Step 3: Cross multiply
    70,909.98x = 97,855.40 × 38,644.58
  4. Step 4: Simplify right side
    70,909.98x = 3,781,580,833.73
  5. Step 5: Solve for x
    x = 3,781,580,833.73/70,909.98
  6. Step 6: Final answer
    x = 53,329.32

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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.