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Finding the Fourth Proportional to 66,005.68, 98,987.88 and 21,622.48

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Solution

The fourth proportional to 66,005.68, 98,987.88 and 21,622.48 is: 32,426.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,005.68 : 98,987.88 = 21,622.48 : x
  2. Step 2: Convert to fraction form
    66,005.68/98,987.88 = 21,622.48/x
  3. Step 3: Cross multiply
    66,005.68x = 98,987.88 × 21,622.48
  4. Step 4: Simplify right side
    66,005.68x = 2,140,363,455.54
  5. Step 5: Solve for x
    x = 2,140,363,455.54/66,005.68
  6. Step 6: Final answer
    x = 32,426.96

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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.