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Finding the Fourth Proportional to 68,708.79, 94,812.12 and 38,490.12

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Solution

The fourth proportional to 68,708.79, 94,812.12 and 38,490.12 is: 53,113.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,708.79 : 94,812.12 = 38,490.12 : x
  2. Step 2: Convert to fraction form
    68,708.79/94,812.12 = 38,490.12/x
  3. Step 3: Cross multiply
    68,708.79x = 94,812.12 × 38,490.12
  4. Step 4: Simplify right side
    68,708.79x = 3,649,329,876.25
  5. Step 5: Solve for x
    x = 3,649,329,876.25/68,708.79
  6. Step 6: Final answer
    x = 53,113.00

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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.