Home / 66,007.20-99,010.80-21,635.40

Finding the Fourth Proportional to 66,007.20, 99,010.80 and 21,635.40

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Solution

The fourth proportional to 66,007.20, 99,010.80 and 21,635.40 is: 32,453.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,007.20 : 99,010.80 = 21,635.40 : x
  2. Step 2: Convert to fraction form
    66,007.20/99,010.80 = 21,635.40/x
  3. Step 3: Cross multiply
    66,007.20x = 99,010.80 × 21,635.40
  4. Step 4: Simplify right side
    66,007.20x = 2,142,138,262.32
  5. Step 5: Solve for x
    x = 2,142,138,262.32/66,007.20
  6. Step 6: Final answer
    x = 32,453.10

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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.