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Finding the Fourth Proportional to 66,564.44, 99,965.64 and 63,888.80

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Solution

The fourth proportional to 66,564.44, 99,965.64 and 63,888.80 is: 95,947.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,564.44 : 99,965.64 = 63,888.80 : x
  2. Step 2: Convert to fraction form
    66,564.44/99,965.64 = 63,888.80/x
  3. Step 3: Cross multiply
    66,564.44x = 99,965.64 × 63,888.80
  4. Step 4: Simplify right side
    66,564.44x = 6,386,684,780.83
  5. Step 5: Solve for x
    x = 6,386,684,780.83/66,564.44
  6. Step 6: Final answer
    x = 95,947.40

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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.