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Finding the Fourth Proportional to 77,346.72, 106,736.40 and 45,517.50

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Solution

The fourth proportional to 77,346.72, 106,736.40 and 45,517.50 is: 62,812.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,346.72 : 106,736.40 = 45,517.50 : x
  2. Step 2: Convert to fraction form
    77,346.72/106,736.40 = 45,517.50/x
  3. Step 3: Cross multiply
    77,346.72x = 106,736.40 × 45,517.50
  4. Step 4: Simplify right side
    77,346.72x = 4,858,374,087
  5. Step 5: Solve for x
    x = 4,858,374,087/77,346.72
  6. Step 6: Final answer
    x = 62,812.93

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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.