Home / 78,133.15-107,816.02-43,671.43

Finding the Fourth Proportional to 78,133.15, 107,816.02 and 43,671.43

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Solution

The fourth proportional to 78,133.15, 107,816.02 and 43,671.43 is: 60,262.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,133.15 : 107,816.02 = 43,671.43 : x
  2. Step 2: Convert to fraction form
    78,133.15/107,816.02 = 43,671.43/x
  3. Step 3: Cross multiply
    78,133.15x = 107,816.02 × 43,671.43
  4. Step 4: Simplify right side
    78,133.15x = 4,708,479,770.31
  5. Step 5: Solve for x
    x = 4,708,479,770.31/78,133.15
  6. Step 6: Final answer
    x = 60,262.25

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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.