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Finding the Fourth Proportional to 66,483.40, 99,700.80 and 22,111.60

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Solution

The fourth proportional to 66,483.40, 99,700.80 and 22,111.60 is: 33,159.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,483.40 : 99,700.80 = 22,111.60 : x
  2. Step 2: Convert to fraction form
    66,483.40/99,700.80 = 22,111.60/x
  3. Step 3: Cross multiply
    66,483.40x = 99,700.80 × 22,111.60
  4. Step 4: Simplify right side
    66,483.40x = 2,204,544,209.28
  5. Step 5: Solve for x
    x = 2,204,544,209.28/66,483.40
  6. Step 6: Final answer
    x = 33,159.32

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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.