Home / 80,984.64-121,588.56-55,962.72

Finding the Fourth Proportional to 80,984.64, 121,588.56 and 55,962.72

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Solution

The fourth proportional to 80,984.64, 121,588.56 and 55,962.72 is: 84,021.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,984.64 : 121,588.56 = 55,962.72 : x
  2. Step 2: Convert to fraction form
    80,984.64/121,588.56 = 55,962.72/x
  3. Step 3: Cross multiply
    80,984.64x = 121,588.56 × 55,962.72
  4. Step 4: Simplify right side
    80,984.64x = 6,804,426,538.48
  5. Step 5: Solve for x
    x = 6,804,426,538.48/80,984.64
  6. Step 6: Final answer
    x = 84,021.20

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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.