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Finding the Fourth Proportional to 71,916.80, 100,552.30 and 71,916.80

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Solution

The fourth proportional to 71,916.80, 100,552.30 and 71,916.80 is: 100,552.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,916.80 : 100,552.30 = 71,916.80 : x
  2. Step 2: Convert to fraction form
    71,916.80/100,552.30 = 71,916.80/x
  3. Step 3: Cross multiply
    71,916.80x = 100,552.30 × 71,916.80
  4. Step 4: Simplify right side
    71,916.80x = 7,231,399,648.64
  5. Step 5: Solve for x
    x = 7,231,399,648.64/71,916.80
  6. Step 6: Final answer
    x = 100,552.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.