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Finding the Fourth Proportional to 66,637.41, 91,959.71 and 38,348.61

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Solution

The fourth proportional to 66,637.41, 91,959.71 and 38,348.61 is: 52,921.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,637.41 : 91,959.71 = 38,348.61 : x
  2. Step 2: Convert to fraction form
    66,637.41/91,959.71 = 38,348.61/x
  3. Step 3: Cross multiply
    66,637.41x = 91,959.71 × 38,348.61
  4. Step 4: Simplify right side
    66,637.41x = 3,526,526,862.76
  5. Step 5: Solve for x
    x = 3,526,526,862.76/66,637.41
  6. Step 6: Final answer
    x = 52,921.13

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1.5x scale

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.