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Finding the Fourth Proportional to 70,881.57, 97,816.86 and 39,049.79

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Solution

The fourth proportional to 70,881.57, 97,816.86 and 39,049.79 is: 53,888.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,881.57 : 97,816.86 = 39,049.79 : x
  2. Step 2: Convert to fraction form
    70,881.57/97,816.86 = 39,049.79/x
  3. Step 3: Cross multiply
    70,881.57x = 97,816.86 × 39,049.79
  4. Step 4: Simplify right side
    70,881.57x = 3,819,727,352.38
  5. Step 5: Solve for x
    x = 3,819,727,352.38/70,881.57
  6. Step 6: Final answer
    x = 53,888.86

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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.