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Finding the Fourth Proportional to 68,522.40, 94,564.80 and 38,714.40

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Solution

The fourth proportional to 68,522.40, 94,564.80 and 38,714.40 is: 53,428.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,522.40 : 94,564.80 = 38,714.40 : x
  2. Step 2: Convert to fraction form
    68,522.40/94,564.80 = 38,714.40/x
  3. Step 3: Cross multiply
    68,522.40x = 94,564.80 × 38,714.40
  4. Step 4: Simplify right side
    68,522.40x = 3,661,019,493.12
  5. Step 5: Solve for x
    x = 3,661,019,493.12/68,522.40
  6. Step 6: Final answer
    x = 53,428.07

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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.