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Finding the Fourth Proportional to 68,960.79, 95,160 and 38,743.74

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Solution

The fourth proportional to 68,960.79, 95,160 and 38,743.74 is: 53,463.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,960.79 : 95,160 = 38,743.74 : x
  2. Step 2: Convert to fraction form
    68,960.79/95,160 = 38,743.74/x
  3. Step 3: Cross multiply
    68,960.79x = 95,160 × 38,743.74
  4. Step 4: Simplify right side
    68,960.79x = 3,686,854,298.40
  5. Step 5: Solve for x
    x = 3,686,854,298.40/68,960.79
  6. Step 6: Final answer
    x = 53,463.05

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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.