Home / 71,999.40-99,357.25-40,167.48

Finding the Fourth Proportional to 71,999.40, 99,357.25 and 40,167.48

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Solution

The fourth proportional to 71,999.40, 99,357.25 and 40,167.48 is: 55,430.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,999.40 : 99,357.25 = 40,167.48 : x
  2. Step 2: Convert to fraction form
    71,999.40/99,357.25 = 40,167.48/x
  3. Step 3: Cross multiply
    71,999.40x = 99,357.25 × 40,167.48
  4. Step 4: Simplify right side
    71,999.40x = 3,990,930,352.23
  5. Step 5: Solve for x
    x = 3,990,930,352.23/71,999.40
  6. Step 6: Final answer
    x = 55,430.05

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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.