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Finding the Fourth Proportional to 65,228.13, 90,002.48 and 61,906.32

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Solution

The fourth proportional to 65,228.13, 90,002.48 and 61,906.32 is: 85,419.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,228.13 : 90,002.48 = 61,906.32 : x
  2. Step 2: Convert to fraction form
    65,228.13/90,002.48 = 61,906.32/x
  3. Step 3: Cross multiply
    65,228.13x = 90,002.48 × 61,906.32
  4. Step 4: Simplify right side
    65,228.13x = 5,571,722,018.14
  5. Step 5: Solve for x
    x = 5,571,722,018.14/65,228.13
  6. Step 6: Final answer
    x = 85,419.01

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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.