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Finding the Fourth Proportional to 75,284.72, 103,656.48 and 63,930.32

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Solution

The fourth proportional to 75,284.72, 103,656.48 and 63,930.32 is: 88,023.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,284.72 : 103,656.48 = 63,930.32 : x
  2. Step 2: Convert to fraction form
    75,284.72/103,656.48 = 63,930.32/x
  3. Step 3: Cross multiply
    75,284.72x = 103,656.48 × 63,930.32
  4. Step 4: Simplify right side
    75,284.72x = 6,626,791,936.47
  5. Step 5: Solve for x
    x = 6,626,791,936.47/75,284.72
  6. Step 6: Final answer
    x = 88,023.07

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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.