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Finding the Fourth Proportional to 71,770.04, 99,041.42 and 39,938.04

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Solution

The fourth proportional to 71,770.04, 99,041.42 and 39,938.04 is: 55,113.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,770.04 : 99,041.42 = 39,938.04 : x
  2. Step 2: Convert to fraction form
    71,770.04/99,041.42 = 39,938.04/x
  3. Step 3: Cross multiply
    71,770.04x = 99,041.42 × 39,938.04
  4. Step 4: Simplify right side
    71,770.04x = 3,955,520,193.62
  5. Step 5: Solve for x
    x = 3,955,520,193.62/71,770.04
  6. Step 6: Final answer
    x = 55,113.81

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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.