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Finding the Fourth Proportional to 65,875.70, 90,822.69 and 41,993.66

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Solution

The fourth proportional to 65,875.70, 90,822.69 and 41,993.66 is: 57,896.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,875.70 : 90,822.69 = 41,993.66 : x
  2. Step 2: Convert to fraction form
    65,875.70/90,822.69 = 41,993.66/x
  3. Step 3: Cross multiply
    65,875.70x = 90,822.69 × 41,993.66
  4. Step 4: Simplify right side
    65,875.70x = 3,813,977,391.20
  5. Step 5: Solve for x
    x = 3,813,977,391.20/65,875.70
  6. Step 6: Final answer
    x = 57,896.57

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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.