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Finding the Fourth Proportional to 35,876.71, 53,740.95 and 21,040.95

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Solution

The fourth proportional to 35,876.71, 53,740.95 and 21,040.95 is: 31,517.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,876.71 : 53,740.95 = 21,040.95 : x
  2. Step 2: Convert to fraction form
    35,876.71/53,740.95 = 21,040.95/x
  3. Step 3: Cross multiply
    35,876.71x = 53,740.95 × 21,040.95
  4. Step 4: Simplify right side
    35,876.71x = 1,130,760,641.90
  5. Step 5: Solve for x
    x = 1,130,760,641.90/35,876.71
  6. Step 6: Final answer
    x = 31,517.96

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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.