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Finding the Fourth Proportional to 65,884.52, 90,920.70 and 35,669.87

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Solution

The fourth proportional to 65,884.52, 90,920.70 and 35,669.87 is: 49,224.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,884.52 : 90,920.70 = 35,669.87 : x
  2. Step 2: Convert to fraction form
    65,884.52/90,920.70 = 35,669.87/x
  3. Step 3: Cross multiply
    65,884.52x = 90,920.70 × 35,669.87
  4. Step 4: Simplify right side
    65,884.52x = 3,243,128,916.36
  5. Step 5: Solve for x
    x = 3,243,128,916.36/65,884.52
  6. Step 6: Final answer
    x = 49,224.44

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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.