Home / 71,907.89-99,236.28-40,077.02

Finding the Fourth Proportional to 71,907.89, 99,236.28 and 40,077.02

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Solution

The fourth proportional to 71,907.89, 99,236.28 and 40,077.02 is: 55,308.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,907.89 : 99,236.28 = 40,077.02 : x
  2. Step 2: Convert to fraction form
    71,907.89/99,236.28 = 40,077.02/x
  3. Step 3: Cross multiply
    71,907.89x = 99,236.28 × 40,077.02
  4. Step 4: Simplify right side
    71,907.89x = 3,977,094,378.29
  5. Step 5: Solve for x
    x = 3,977,094,378.29/71,907.89
  6. Step 6: Final answer
    x = 55,308.18

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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.