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Finding the Fourth Proportional to 88,020.60, 132,030.90 and 31,887.60

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Solution

The fourth proportional to 88,020.60, 132,030.90 and 31,887.60 is: 47,831.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,020.60 : 132,030.90 = 31,887.60 : x
  2. Step 2: Convert to fraction form
    88,020.60/132,030.90 = 31,887.60/x
  3. Step 3: Cross multiply
    88,020.60x = 132,030.90 × 31,887.60
  4. Step 4: Simplify right side
    88,020.60x = 4,210,148,526.84
  5. Step 5: Solve for x
    x = 4,210,148,526.84/88,020.60
  6. Step 6: Final answer
    x = 47,831.40

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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.