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Finding the Fourth Proportional to 69,718, 96,211.45 and 37,886.90

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Solution

The fourth proportional to 69,718, 96,211.45 and 37,886.90 is: 52,284.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,718 : 96,211.45 = 37,886.90 : x
  2. Step 2: Convert to fraction form
    69,718/96,211.45 = 37,886.90/x
  3. Step 3: Cross multiply
    69,718x = 96,211.45 × 37,886.90
  4. Step 4: Simplify right side
    69,718x = 3,645,153,585.01
  5. Step 5: Solve for x
    x = 3,645,153,585.01/69,718
  6. Step 6: Final answer
    x = 52,284.25

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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.