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Finding the Fourth Proportional to 65,009.70, 97,514.55 and 54,512.10

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Solution

The fourth proportional to 65,009.70, 97,514.55 and 54,512.10 is: 81,768.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,009.70 : 97,514.55 = 54,512.10 : x
  2. Step 2: Convert to fraction form
    65,009.70/97,514.55 = 54,512.10/x
  3. Step 3: Cross multiply
    65,009.70x = 97,514.55 × 54,512.10
  4. Step 4: Simplify right side
    65,009.70x = 5,315,722,901.06
  5. Step 5: Solve for x
    x = 5,315,722,901.06/65,009.70
  6. Step 6: Final answer
    x = 81,768.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.