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Finding the Fourth Proportional to 75,255.68, 103,848.80 and 43,422.72

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Solution

The fourth proportional to 75,255.68, 103,848.80 and 43,422.72 is: 59,921.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,255.68 : 103,848.80 = 43,422.72 : x
  2. Step 2: Convert to fraction form
    75,255.68/103,848.80 = 43,422.72/x
  3. Step 3: Cross multiply
    75,255.68x = 103,848.80 × 43,422.72
  4. Step 4: Simplify right side
    75,255.68x = 4,509,397,364.74
  5. Step 5: Solve for x
    x = 4,509,397,364.74/75,255.68
  6. Step 6: Final answer
    x = 59,921.02

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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.