Home / 78,699.20-117,854.40-58,660.64

Finding the Fourth Proportional to 78,699.20, 117,854.40 and 58,660.64

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Solution

The fourth proportional to 78,699.20, 117,854.40 and 58,660.64 is: 87,846.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,699.20 : 117,854.40 = 58,660.64 : x
  2. Step 2: Convert to fraction form
    78,699.20/117,854.40 = 58,660.64/x
  3. Step 3: Cross multiply
    78,699.20x = 117,854.40 × 58,660.64
  4. Step 4: Simplify right side
    78,699.20x = 6,913,414,530.82
  5. Step 5: Solve for x
    x = 6,913,414,530.82/78,699.20
  6. Step 6: Final answer
    x = 87,846.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.