Home / 66,115.20-99,187.38-21,740.16

Finding the Fourth Proportional to 66,115.20, 99,187.38 and 21,740.16

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Solution

The fourth proportional to 66,115.20, 99,187.38 and 21,740.16 is: 32,615.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,115.20 : 99,187.38 = 21,740.16 : x
  2. Step 2: Convert to fraction form
    66,115.20/99,187.38 = 21,740.16/x
  3. Step 3: Cross multiply
    66,115.20x = 99,187.38 × 21,740.16
  4. Step 4: Simplify right side
    66,115.20x = 2,156,349,511.18
  5. Step 5: Solve for x
    x = 2,156,349,511.18/66,115.20
  6. Step 6: Final answer
    x = 32,615.03

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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.