Home / 80,918.02-121,292.80-45,327.16

Finding the Fourth Proportional to 80,918.02, 121,292.80 and 45,327.16

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Solution

The fourth proportional to 80,918.02, 121,292.80 and 45,327.16 is: 67,943.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,918.02 : 121,292.80 = 45,327.16 : x
  2. Step 2: Convert to fraction form
    80,918.02/121,292.80 = 45,327.16/x
  3. Step 3: Cross multiply
    80,918.02x = 121,292.80 × 45,327.16
  4. Step 4: Simplify right side
    80,918.02x = 5,497,858,152.45
  5. Step 5: Solve for x
    x = 5,497,858,152.45/80,918.02
  6. Step 6: Final answer
    x = 67,943.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.