Home / 78,378.59-108,166.20-48,165.17

Finding the Fourth Proportional to 78,378.59, 108,166.20 and 48,165.17

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Solution

The fourth proportional to 78,378.59, 108,166.20 and 48,165.17 is: 66,470.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,378.59 : 108,166.20 = 48,165.17 : x
  2. Step 2: Convert to fraction form
    78,378.59/108,166.20 = 48,165.17/x
  3. Step 3: Cross multiply
    78,378.59x = 108,166.20 × 48,165.17
  4. Step 4: Simplify right side
    78,378.59x = 5,209,843,411.25
  5. Step 5: Solve for x
    x = 5,209,843,411.25/78,378.59
  6. Step 6: Final answer
    x = 66,470.24

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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.