Home / 72,001.15-99,359.67-40,169.23

Finding the Fourth Proportional to 72,001.15, 99,359.67 and 40,169.23

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Solution

The fourth proportional to 72,001.15, 99,359.67 and 40,169.23 is: 55,432.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,001.15 : 99,359.67 = 40,169.23 : x
  2. Step 2: Convert to fraction form
    72,001.15/99,359.67 = 40,169.23/x
  3. Step 3: Cross multiply
    72,001.15x = 99,359.67 × 40,169.23
  4. Step 4: Simplify right side
    72,001.15x = 3,991,201,436.95
  5. Step 5: Solve for x
    x = 3,991,201,436.95/72,001.15
  6. Step 6: Final answer
    x = 55,432.47

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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.