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Finding the Fourth Proportional to 78,959.20, 108,970.17 and 44,978.32

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Solution

The fourth proportional to 78,959.20, 108,970.17 and 44,978.32 is: 62,073.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,959.20 : 108,970.17 = 44,978.32 : x
  2. Step 2: Convert to fraction form
    78,959.20/108,970.17 = 44,978.32/x
  3. Step 3: Cross multiply
    78,959.20x = 108,970.17 × 44,978.32
  4. Step 4: Simplify right side
    78,959.20x = 4,901,295,176.71
  5. Step 5: Solve for x
    x = 4,901,295,176.71/78,959.20
  6. Step 6: Final answer
    x = 62,073.77

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1.5x scale

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.