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Finding the Fourth Proportional to 66,570.75, 99,870.75 and 25,017.75

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Solution

The fourth proportional to 66,570.75, 99,870.75 and 25,017.75 is: 37,532.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,570.75 : 99,870.75 = 25,017.75 : x
  2. Step 2: Convert to fraction form
    66,570.75/99,870.75 = 25,017.75/x
  3. Step 3: Cross multiply
    66,570.75x = 99,870.75 × 25,017.75
  4. Step 4: Simplify right side
    66,570.75x = 2,498,541,455.81
  5. Step 5: Solve for x
    x = 2,498,541,455.81/66,570.75
  6. Step 6: Final answer
    x = 37,532.12

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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.