Home / 66,420.20-99,630.30-61,351.40

Finding the Fourth Proportional to 66,420.20, 99,630.30 and 61,351.40

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Solution

The fourth proportional to 66,420.20, 99,630.30 and 61,351.40 is: 92,027.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,420.20 : 99,630.30 = 61,351.40 : x
  2. Step 2: Convert to fraction form
    66,420.20/99,630.30 = 61,351.40/x
  3. Step 3: Cross multiply
    66,420.20x = 99,630.30 × 61,351.40
  4. Step 4: Simplify right side
    66,420.20x = 6,112,458,387.42
  5. Step 5: Solve for x
    x = 6,112,458,387.42/66,420.20
  6. Step 6: Final answer
    x = 92,027.10

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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.