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Finding the Fourth Proportional to 65,885.02, 90,921.39 and 35,670.37

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Solution

The fourth proportional to 65,885.02, 90,921.39 and 35,670.37 is: 49,225.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,885.02 : 90,921.39 = 35,670.37 : x
  2. Step 2: Convert to fraction form
    65,885.02/90,921.39 = 35,670.37/x
  3. Step 3: Cross multiply
    65,885.02x = 90,921.39 × 35,670.37
  4. Step 4: Simplify right side
    65,885.02x = 3,243,198,989.26
  5. Step 5: Solve for x
    x = 3,243,198,989.26/65,885.02
  6. Step 6: Final answer
    x = 49,225.13

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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.