Home / 66,276.54-99,430.19-21,900.60

Finding the Fourth Proportional to 66,276.54, 99,430.19 and 21,900.60

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Solution

The fourth proportional to 66,276.54, 99,430.19 and 21,900.60 is: 32,855.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,276.54 : 99,430.19 = 21,900.60 : x
  2. Step 2: Convert to fraction form
    66,276.54/99,430.19 = 21,900.60/x
  3. Step 3: Cross multiply
    66,276.54x = 99,430.19 × 21,900.60
  4. Step 4: Simplify right side
    66,276.54x = 2,177,580,709.61
  5. Step 5: Solve for x
    x = 2,177,580,709.61/66,276.54
  6. Step 6: Final answer
    x = 32,855.98

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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.