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Finding the Fourth Proportional to 66,569.78, 91,862.58 and 37,888.58

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Solution

The fourth proportional to 66,569.78, 91,862.58 and 37,888.58 is: 52,284.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,569.78 : 91,862.58 = 37,888.58 : x
  2. Step 2: Convert to fraction form
    66,569.78/91,862.58 = 37,888.58/x
  3. Step 3: Cross multiply
    66,569.78x = 91,862.58 × 37,888.58
  4. Step 4: Simplify right side
    66,569.78x = 3,480,542,711.34
  5. Step 5: Solve for x
    x = 3,480,542,711.34/66,569.78
  6. Step 6: Final answer
    x = 52,284.13

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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.