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Finding the Fourth Proportional to 65,885.52, 90,922.08 and 35,670.87

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Solution

The fourth proportional to 65,885.52, 90,922.08 and 35,670.87 is: 49,225.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,885.52 : 90,922.08 = 35,670.87 : x
  2. Step 2: Convert to fraction form
    65,885.52/90,922.08 = 35,670.87/x
  3. Step 3: Cross multiply
    65,885.52x = 90,922.08 × 35,670.87
  4. Step 4: Simplify right side
    65,885.52x = 3,243,269,062.84
  5. Step 5: Solve for x
    x = 3,243,269,062.84/65,885.52
  6. Step 6: Final answer
    x = 49,225.82

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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.