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Finding the Fourth Proportional to 89,079.60, 133,716.60 and 49,616.40

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Solution

The fourth proportional to 89,079.60, 133,716.60 and 49,616.40 is: 74,478.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,079.60 : 133,716.60 = 49,616.40 : x
  2. Step 2: Convert to fraction form
    89,079.60/133,716.60 = 49,616.40/x
  3. Step 3: Cross multiply
    89,079.60x = 133,716.60 × 49,616.40
  4. Step 4: Simplify right side
    89,079.60x = 6,634,536,312.24
  5. Step 5: Solve for x
    x = 6,634,536,312.24/89,079.60
  6. Step 6: Final answer
    x = 74,478.74

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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.