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Finding the Fourth Proportional to 88,065.45, 132,040.80 and 57,988.71

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Solution

The fourth proportional to 88,065.45, 132,040.80 and 57,988.71 is: 86,945.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,065.45 : 132,040.80 = 57,988.71 : x
  2. Step 2: Convert to fraction form
    88,065.45/132,040.80 = 57,988.71/x
  3. Step 3: Cross multiply
    88,065.45x = 132,040.80 × 57,988.71
  4. Step 4: Simplify right side
    88,065.45x = 7,656,875,659.37
  5. Step 5: Solve for x
    x = 7,656,875,659.37/88,065.45
  6. Step 6: Final answer
    x = 86,945.29

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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.