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Finding the Fourth Proportional to 71,007.93, 97,990.74 and 39,176.55

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Solution

The fourth proportional to 71,007.93, 97,990.74 and 39,176.55 is: 54,063.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,007.93 : 97,990.74 = 39,176.55 : x
  2. Step 2: Convert to fraction form
    71,007.93/97,990.74 = 39,176.55/x
  3. Step 3: Cross multiply
    71,007.93x = 97,990.74 × 39,176.55
  4. Step 4: Simplify right side
    71,007.93x = 3,838,939,125.15
  5. Step 5: Solve for x
    x = 3,838,939,125.15/71,007.93
  6. Step 6: Final answer
    x = 54,063.53

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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.