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Finding the Fourth Proportional to 66,230.80, 99,443.40 and 51,456.40

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Solution

The fourth proportional to 66,230.80, 99,443.40 and 51,456.40 is: 77,260.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,230.80 : 99,443.40 = 51,456.40 : x
  2. Step 2: Convert to fraction form
    66,230.80/99,443.40 = 51,456.40/x
  3. Step 3: Cross multiply
    66,230.80x = 99,443.40 × 51,456.40
  4. Step 4: Simplify right side
    66,230.80x = 5,116,999,367.76
  5. Step 5: Solve for x
    x = 5,116,999,367.76/66,230.80
  6. Step 6: Final answer
    x = 77,260.12

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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.