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Finding the Fourth Proportional to 70,878.57, 97,808.85 and 39,046.83

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Solution

The fourth proportional to 70,878.57, 97,808.85 and 39,046.83 is: 53,882.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,878.57 : 97,808.85 = 39,046.83 : x
  2. Step 2: Convert to fraction form
    70,878.57/97,808.85 = 39,046.83/x
  3. Step 3: Cross multiply
    70,878.57x = 97,808.85 × 39,046.83
  4. Step 4: Simplify right side
    70,878.57x = 3,819,125,538.45
  5. Step 5: Solve for x
    x = 3,819,125,538.45/70,878.57
  6. Step 6: Final answer
    x = 53,882.66

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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.