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Finding the Fourth Proportional to 66,028.80, 99,050.40 and 63,955.20

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Solution

The fourth proportional to 66,028.80, 99,050.40 and 63,955.20 is: 95,939.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,028.80 : 99,050.40 = 63,955.20 : x
  2. Step 2: Convert to fraction form
    66,028.80/99,050.40 = 63,955.20/x
  3. Step 3: Cross multiply
    66,028.80x = 99,050.40 × 63,955.20
  4. Step 4: Simplify right side
    66,028.80x = 6,334,788,142.08
  5. Step 5: Solve for x
    x = 6,334,788,142.08/66,028.80
  6. Step 6: Final answer
    x = 95,939.77

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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.