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Finding the Fourth Proportional to 79,275.63, 109,400.40 and 43,464.90

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Solution

The fourth proportional to 79,275.63, 109,400.40 and 43,464.90 is: 59,981.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,275.63 : 109,400.40 = 43,464.90 : x
  2. Step 2: Convert to fraction form
    79,275.63/109,400.40 = 43,464.90/x
  3. Step 3: Cross multiply
    79,275.63x = 109,400.40 × 43,464.90
  4. Step 4: Simplify right side
    79,275.63x = 4,755,077,445.96
  5. Step 5: Solve for x
    x = 4,755,077,445.96/79,275.63
  6. Step 6: Final answer
    x = 59,981.58

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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.