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Finding the Fourth Proportional to 77,000.36, 106,310.52 and 68,920.02

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Solution

The fourth proportional to 77,000.36, 106,310.52 and 68,920.02 is: 95,154.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,000.36 : 106,310.52 = 68,920.02 : x
  2. Step 2: Convert to fraction form
    77,000.36/106,310.52 = 68,920.02/x
  3. Step 3: Cross multiply
    77,000.36x = 106,310.52 × 68,920.02
  4. Step 4: Simplify right side
    77,000.36x = 7,326,923,164.61
  5. Step 5: Solve for x
    x = 7,326,923,164.61/77,000.36
  6. Step 6: Final answer
    x = 95,154.41

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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.