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Finding the Fourth Proportional to 70,780.80, 97,675.02 and 38,948.88

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Solution

The fourth proportional to 70,780.80, 97,675.02 and 38,948.88 is: 53,748.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,780.80 : 97,675.02 = 38,948.88 : x
  2. Step 2: Convert to fraction form
    70,780.80/97,675.02 = 38,948.88/x
  3. Step 3: Cross multiply
    70,780.80x = 97,675.02 × 38,948.88
  4. Step 4: Simplify right side
    70,780.80x = 3,804,332,632.98
  5. Step 5: Solve for x
    x = 3,804,332,632.98/70,780.80
  6. Step 6: Final answer
    x = 53,748.09

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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.