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Finding the Fourth Proportional to 65,999.80, 98,999.70 and 61,334.20

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Solution

The fourth proportional to 65,999.80, 98,999.70 and 61,334.20 is: 92,001.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,999.80 : 98,999.70 = 61,334.20 : x
  2. Step 2: Convert to fraction form
    65,999.80/98,999.70 = 61,334.20/x
  3. Step 3: Cross multiply
    65,999.80x = 98,999.70 × 61,334.20
  4. Step 4: Simplify right side
    65,999.80x = 6,072,067,399.74
  5. Step 5: Solve for x
    x = 6,072,067,399.74/65,999.80
  6. Step 6: Final answer
    x = 92,001.30

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1.5x scale

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.