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Finding the Fourth Proportional to 64,435.31, 88,919.65 and 36,140.39

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Solution

The fourth proportional to 64,435.31, 88,919.65 and 36,140.39 is: 49,873.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,435.31 : 88,919.65 = 36,140.39 : x
  2. Step 2: Convert to fraction form
    64,435.31/88,919.65 = 36,140.39/x
  3. Step 3: Cross multiply
    64,435.31x = 88,919.65 × 36,140.39
  4. Step 4: Simplify right side
    64,435.31x = 3,213,590,763.69
  5. Step 5: Solve for x
    x = 3,213,590,763.69/64,435.31
  6. Step 6: Final answer
    x = 49,873.13

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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.