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Finding the Fourth Proportional to 97,680.78, 134,792.94 and 54,652.80

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Solution

The fourth proportional to 97,680.78, 134,792.94 and 54,652.80 is: 75,417.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,680.78 : 134,792.94 = 54,652.80 : x
  2. Step 2: Convert to fraction form
    97,680.78/134,792.94 = 54,652.80/x
  3. Step 3: Cross multiply
    97,680.78x = 134,792.94 × 54,652.80
  4. Step 4: Simplify right side
    97,680.78x = 7,366,811,591.23
  5. Step 5: Solve for x
    x = 7,366,811,591.23/97,680.78
  6. Step 6: Final answer
    x = 75,417.21

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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.