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Finding the Fourth Proportional to 66,208.40, 99,166.80 and 58,821.20

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Solution

The fourth proportional to 66,208.40, 99,166.80 and 58,821.20 is: 88,102.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,208.40 : 99,166.80 = 58,821.20 : x
  2. Step 2: Convert to fraction form
    66,208.40/99,166.80 = 58,821.20/x
  3. Step 3: Cross multiply
    66,208.40x = 99,166.80 × 58,821.20
  4. Step 4: Simplify right side
    66,208.40x = 5,833,110,176.16
  5. Step 5: Solve for x
    x = 5,833,110,176.16/66,208.40
  6. Step 6: Final answer
    x = 88,102.27

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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.