Home / 66,259.20-99,393.60-39,907.20

Finding the Fourth Proportional to 66,259.20, 99,393.60 and 39,907.20

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Solution

The fourth proportional to 66,259.20, 99,393.60 and 39,907.20 is: 59,863.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,259.20 : 99,393.60 = 39,907.20 : x
  2. Step 2: Convert to fraction form
    66,259.20/99,393.60 = 39,907.20/x
  3. Step 3: Cross multiply
    66,259.20x = 99,393.60 × 39,907.20
  4. Step 4: Simplify right side
    66,259.20x = 3,966,520,273.92
  5. Step 5: Solve for x
    x = 3,966,520,273.92/66,259.20
  6. Step 6: Final answer
    x = 59,863.69

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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.