Home / 71,984.28-99,340.41-40,152.50

Finding the Fourth Proportional to 71,984.28, 99,340.41 and 40,152.50

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Solution

The fourth proportional to 71,984.28, 99,340.41 and 40,152.50 is: 55,411.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,984.28 : 99,340.41 = 40,152.50 : x
  2. Step 2: Convert to fraction form
    71,984.28/99,340.41 = 40,152.50/x
  3. Step 3: Cross multiply
    71,984.28x = 99,340.41 × 40,152.50
  4. Step 4: Simplify right side
    71,984.28x = 3,988,765,315.82
  5. Step 5: Solve for x
    x = 3,988,765,315.82/71,984.28
  6. Step 6: Final answer
    x = 55,411.62

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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.