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Finding the Fourth Proportional to 79,641.71, 109,903.53 and 43,341.61

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Solution

The fourth proportional to 79,641.71, 109,903.53 and 43,341.61 is: 59,810.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,641.71 : 109,903.53 = 43,341.61 : x
  2. Step 2: Convert to fraction form
    79,641.71/109,903.53 = 43,341.61/x
  3. Step 3: Cross multiply
    79,641.71x = 109,903.53 × 43,341.61
  4. Step 4: Simplify right side
    79,641.71x = 4,763,395,660.12
  5. Step 5: Solve for x
    x = 4,763,395,660.12/79,641.71
  6. Step 6: Final answer
    x = 59,810.32

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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.