Home / 78,460.20-117,617.40-54,767.70

Finding the Fourth Proportional to 78,460.20, 117,617.40 and 54,767.70

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Solution

The fourth proportional to 78,460.20, 117,617.40 and 54,767.70 is: 82,100.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,460.20 : 117,617.40 = 54,767.70 : x
  2. Step 2: Convert to fraction form
    78,460.20/117,617.40 = 54,767.70/x
  3. Step 3: Cross multiply
    78,460.20x = 117,617.40 × 54,767.70
  4. Step 4: Simplify right side
    78,460.20x = 6,441,634,477.98
  5. Step 5: Solve for x
    x = 6,441,634,477.98/78,460.20
  6. Step 6: Final answer
    x = 82,100.66

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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.