Home / 78,219.12-107,934.39-48,005.72

Finding the Fourth Proportional to 78,219.12, 107,934.39 and 48,005.72

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Solution

The fourth proportional to 78,219.12, 107,934.39 and 48,005.72 is: 66,242.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,219.12 : 107,934.39 = 48,005.72 : x
  2. Step 2: Convert to fraction form
    78,219.12/107,934.39 = 48,005.72/x
  3. Step 3: Cross multiply
    78,219.12x = 107,934.39 × 48,005.72
  4. Step 4: Simplify right side
    78,219.12x = 5,181,467,565.04
  5. Step 5: Solve for x
    x = 5,181,467,565.04/78,219.12
  6. Step 6: Final answer
    x = 66,242.98

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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.