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Finding the Fourth Proportional to 66,639.78, 91,962.27 and 37,565.51

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Solution

The fourth proportional to 66,639.78, 91,962.27 and 37,565.51 is: 51,840.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,639.78 : 91,962.27 = 37,565.51 : x
  2. Step 2: Convert to fraction form
    66,639.78/91,962.27 = 37,565.51/x
  3. Step 3: Cross multiply
    66,639.78x = 91,962.27 × 37,565.51
  4. Step 4: Simplify right side
    66,639.78x = 3,454,609,113.50
  5. Step 5: Solve for x
    x = 3,454,609,113.50/66,639.78
  6. Step 6: Final answer
    x = 51,840.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.