Home / 80,988.39-111,762.89-45,179.00

Finding the Fourth Proportional to 80,988.39, 111,762.89 and 45,179.00

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Solution

The fourth proportional to 80,988.39, 111,762.89 and 45,179.00 is: 62,346.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,988.39 : 111,762.89 = 45,179.00 : x
  2. Step 2: Convert to fraction form
    80,988.39/111,762.89 = 45,179.00/x
  3. Step 3: Cross multiply
    80,988.39x = 111,762.89 × 45,179.00
  4. Step 4: Simplify right side
    80,988.39x = 5,049,335,411.13
  5. Step 5: Solve for x
    x = 5,049,335,411.13/80,988.39
  6. Step 6: Final answer
    x = 62,346.41

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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.