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Finding the Fourth Proportional to 89,864.40, 134,893.80 and 50,498.40

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Solution

The fourth proportional to 89,864.40, 134,893.80 and 50,498.40 is: 75,802.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,864.40 : 134,893.80 = 50,498.40 : x
  2. Step 2: Convert to fraction form
    89,864.40/134,893.80 = 50,498.40/x
  3. Step 3: Cross multiply
    89,864.40x = 134,893.80 × 50,498.40
  4. Step 4: Simplify right side
    89,864.40x = 6,811,921,069.92
  5. Step 5: Solve for x
    x = 6,811,921,069.92/89,864.40
  6. Step 6: Final answer
    x = 75,802.22

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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.