Home / 78,521.04-108,339.66-48,311.28

Finding the Fourth Proportional to 78,521.04, 108,339.66 and 48,311.28

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Solution

The fourth proportional to 78,521.04, 108,339.66 and 48,311.28 is: 66,657.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,521.04 : 108,339.66 = 48,311.28 : x
  2. Step 2: Convert to fraction form
    78,521.04/108,339.66 = 48,311.28/x
  3. Step 3: Cross multiply
    78,521.04x = 108,339.66 × 48,311.28
  4. Step 4: Simplify right side
    78,521.04x = 5,234,027,649.36
  5. Step 5: Solve for x
    x = 5,234,027,649.36/78,521.04
  6. Step 6: Final answer
    x = 66,657.65

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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.