Home / 78,929.35-108,924.64-47,116.70

Finding the Fourth Proportional to 78,929.35, 108,924.64 and 47,116.70

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Solution

The fourth proportional to 78,929.35, 108,924.64 and 47,116.70 is: 65,022.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,929.35 : 108,924.64 = 47,116.70 : x
  2. Step 2: Convert to fraction form
    78,929.35/108,924.64 = 47,116.70/x
  3. Step 3: Cross multiply
    78,929.35x = 108,924.64 × 47,116.70
  4. Step 4: Simplify right side
    78,929.35x = 5,132,169,331.54
  5. Step 5: Solve for x
    x = 5,132,169,331.54/78,929.35
  6. Step 6: Final answer
    x = 65,022.32

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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.