Home / 72,040.19-99,411.42-40,211.14

Finding the Fourth Proportional to 72,040.19, 99,411.42 and 40,211.14

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Solution

The fourth proportional to 72,040.19, 99,411.42 and 40,211.14 is: 55,489.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,040.19 : 99,411.42 = 40,211.14 : x
  2. Step 2: Convert to fraction form
    72,040.19/99,411.42 = 40,211.14/x
  3. Step 3: Cross multiply
    72,040.19x = 99,411.42 × 40,211.14
  4. Step 4: Simplify right side
    72,040.19x = 3,997,446,527.22
  5. Step 5: Solve for x
    x = 3,997,446,527.22/72,040.19
  6. Step 6: Final answer
    x = 55,489.12

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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.