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Finding the Fourth Proportional to 71,430.80, 107,069.40 and 27,040.40

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Solution

The fourth proportional to 71,430.80, 107,069.40 and 27,040.40 is: 40,531.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,430.80 : 107,069.40 = 27,040.40 : x
  2. Step 2: Convert to fraction form
    71,430.80/107,069.40 = 27,040.40/x
  3. Step 3: Cross multiply
    71,430.80x = 107,069.40 × 27,040.40
  4. Step 4: Simplify right side
    71,430.80x = 2,895,199,403.76
  5. Step 5: Solve for x
    x = 2,895,199,403.76/71,430.80
  6. Step 6: Final answer
    x = 40,531.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.