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Finding the Fourth Proportional to 87,978.25, 131,367.14 and 70,007.19

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Solution

The fourth proportional to 87,978.25, 131,367.14 and 70,007.19 is: 104,533.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,978.25 : 131,367.14 = 70,007.19 : x
  2. Step 2: Convert to fraction form
    87,978.25/131,367.14 = 70,007.19/x
  3. Step 3: Cross multiply
    87,978.25x = 131,367.14 × 70,007.19
  4. Step 4: Simplify right side
    87,978.25x = 9,196,643,946.50
  5. Step 5: Solve for x
    x = 9,196,643,946.50/87,978.25
  6. Step 6: Final answer
    x = 104,533.15

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.