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Finding the Fourth Proportional to 65,013.70, 97,411.20 and 55,609.60

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Solution

The fourth proportional to 65,013.70, 97,411.20 and 55,609.60 is: 83,320.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,013.70 : 97,411.20 = 55,609.60 : x
  2. Step 2: Convert to fraction form
    65,013.70/97,411.20 = 55,609.60/x
  3. Step 3: Cross multiply
    65,013.70x = 97,411.20 × 55,609.60
  4. Step 4: Simplify right side
    65,013.70x = 5,416,997,867.52
  5. Step 5: Solve for x
    x = 5,416,997,867.52/65,013.70
  6. Step 6: Final answer
    x = 83,320.87

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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.