Home / 72,040.13-99,411.33-40,211.08

Finding the Fourth Proportional to 72,040.13, 99,411.33 and 40,211.08

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Solution

The fourth proportional to 72,040.13, 99,411.33 and 40,211.08 is: 55,489.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,040.13 : 99,411.33 = 40,211.08 : x
  2. Step 2: Convert to fraction form
    72,040.13/99,411.33 = 40,211.08/x
  3. Step 3: Cross multiply
    72,040.13x = 99,411.33 × 40,211.08
  4. Step 4: Simplify right side
    72,040.13x = 3,997,436,695.01
  5. Step 5: Solve for x
    x = 3,997,436,695.01/72,040.13
  6. Step 6: Final answer
    x = 55,489.02

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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.