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Finding the Fourth Proportional to 87,308.71, 130,804.47 and 67,350.31

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Solution

The fourth proportional to 87,308.71, 130,804.47 and 67,350.31 is: 100,903.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,308.71 : 130,804.47 = 67,350.31 : x
  2. Step 2: Convert to fraction form
    87,308.71/130,804.47 = 67,350.31/x
  3. Step 3: Cross multiply
    87,308.71x = 130,804.47 × 67,350.31
  4. Step 4: Simplify right side
    87,308.71x = 8,809,721,603.89
  5. Step 5: Solve for x
    x = 8,809,721,603.89/87,308.71
  6. Step 6: Final answer
    x = 100,903.12

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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.