Home / 71,990.93-99,346.52-40,160.36

Finding the Fourth Proportional to 71,990.93, 99,346.52 and 40,160.36

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Solution

The fourth proportional to 71,990.93, 99,346.52 and 40,160.36 is: 55,420.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,990.93 : 99,346.52 = 40,160.36 : x
  2. Step 2: Convert to fraction form
    71,990.93/99,346.52 = 40,160.36/x
  3. Step 3: Cross multiply
    71,990.93x = 99,346.52 × 40,160.36
  4. Step 4: Simplify right side
    71,990.93x = 3,989,791,807.15
  5. Step 5: Solve for x
    x = 3,989,791,807.15/71,990.93
  6. Step 6: Final answer
    x = 55,420.76

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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.