Home / 78,579.12-108,364.62-60,645.72

Finding the Fourth Proportional to 78,579.12, 108,364.62 and 60,645.72

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Solution

The fourth proportional to 78,579.12, 108,364.62 and 60,645.72 is: 83,633.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,579.12 : 108,364.62 = 60,645.72 : x
  2. Step 2: Convert to fraction form
    78,579.12/108,364.62 = 60,645.72/x
  3. Step 3: Cross multiply
    78,579.12x = 108,364.62 × 60,645.72
  4. Step 4: Simplify right side
    78,579.12x = 6,571,850,402.43
  5. Step 5: Solve for x
    x = 6,571,850,402.43/78,579.12
  6. Step 6: Final answer
    x = 83,633.55

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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.