Home / 78,610.40-117,822.72-77,733.44

Finding the Fourth Proportional to 78,610.40, 117,822.72 and 77,733.44

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Solution

The fourth proportional to 78,610.40, 117,822.72 and 77,733.44 is: 116,508.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,610.40 : 117,822.72 = 77,733.44 : x
  2. Step 2: Convert to fraction form
    78,610.40/117,822.72 = 77,733.44/x
  3. Step 3: Cross multiply
    78,610.40x = 117,822.72 × 77,733.44
  4. Step 4: Simplify right side
    78,610.40x = 9,158,765,335.76
  5. Step 5: Solve for x
    x = 9,158,765,335.76/78,610.40
  6. Step 6: Final answer
    x = 116,508.32

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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.