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Finding the Fourth Proportional to 65,261.64, 90,064.62 and 36,972.84

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Solution

The fourth proportional to 65,261.64, 90,064.62 and 36,972.84 is: 51,024.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,261.64 : 90,064.62 = 36,972.84 : x
  2. Step 2: Convert to fraction form
    65,261.64/90,064.62 = 36,972.84/x
  3. Step 3: Cross multiply
    65,261.64x = 90,064.62 × 36,972.84
  4. Step 4: Simplify right side
    65,261.64x = 3,329,944,784.92
  5. Step 5: Solve for x
    x = 3,329,944,784.92/65,261.64
  6. Step 6: Final answer
    x = 51,024.53

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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.