Home / 66,275.80-99,284.10-39,902.20

Finding the Fourth Proportional to 66,275.80, 99,284.10 and 39,902.20

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Solution

The fourth proportional to 66,275.80, 99,284.10 and 39,902.20 is: 59,775.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,275.80 : 99,284.10 = 39,902.20 : x
  2. Step 2: Convert to fraction form
    66,275.80/99,284.10 = 39,902.20/x
  3. Step 3: Cross multiply
    66,275.80x = 99,284.10 × 39,902.20
  4. Step 4: Simplify right side
    66,275.80x = 3,961,654,015.02
  5. Step 5: Solve for x
    x = 3,961,654,015.02/66,275.80
  6. Step 6: Final answer
    x = 59,775.27

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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.