Home / 71,837.28-99,128.34-40,009.14

Finding the Fourth Proportional to 71,837.28, 99,128.34 and 40,009.14

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Solution

The fourth proportional to 71,837.28, 99,128.34 and 40,009.14 is: 55,208.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,837.28 : 99,128.34 = 40,009.14 : x
  2. Step 2: Convert to fraction form
    71,837.28/99,128.34 = 40,009.14/x
  3. Step 3: Cross multiply
    71,837.28x = 99,128.34 × 40,009.14
  4. Step 4: Simplify right side
    71,837.28x = 3,966,039,411.33
  5. Step 5: Solve for x
    x = 3,966,039,411.33/71,837.28
  6. Step 6: Final answer
    x = 55,208.66

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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.