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Finding the Fourth Proportional to 71,291.71, 98,567.28 and 68,154.75

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Solution

The fourth proportional to 71,291.71, 98,567.28 and 68,154.75 is: 94,230.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,291.71 : 98,567.28 = 68,154.75 : x
  2. Step 2: Convert to fraction form
    71,291.71/98,567.28 = 68,154.75/x
  3. Step 3: Cross multiply
    71,291.71x = 98,567.28 × 68,154.75
  4. Step 4: Simplify right side
    71,291.71x = 6,717,828,326.58
  5. Step 5: Solve for x
    x = 6,717,828,326.58/71,291.71
  6. Step 6: Final answer
    x = 94,230.15

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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.