Home / 79,432.45-109,543.65-53,976.98

Finding the Fourth Proportional to 79,432.45, 109,543.65 and 53,976.98

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Solution

The fourth proportional to 79,432.45, 109,543.65 and 53,976.98 is: 74,438.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,432.45 : 109,543.65 = 53,976.98 : x
  2. Step 2: Convert to fraction form
    79,432.45/109,543.65 = 53,976.98/x
  3. Step 3: Cross multiply
    79,432.45x = 109,543.65 × 53,976.98
  4. Step 4: Simplify right side
    79,432.45x = 5,912,835,405.18
  5. Step 5: Solve for x
    x = 5,912,835,405.18/79,432.45
  6. Step 6: Final answer
    x = 74,438.54

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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.