Home / 65,865.13-90,869.07-43,216.61

Finding the Fourth Proportional to 65,865.13, 90,869.07 and 43,216.61

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Solution

The fourth proportional to 65,865.13, 90,869.07 and 43,216.61 is: 59,622.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,865.13 : 90,869.07 = 43,216.61 : x
  2. Step 2: Convert to fraction form
    65,865.13/90,869.07 = 43,216.61/x
  3. Step 3: Cross multiply
    65,865.13x = 90,869.07 × 43,216.61
  4. Step 4: Simplify right side
    65,865.13x = 3,927,053,159.25
  5. Step 5: Solve for x
    x = 3,927,053,159.25/65,865.13
  6. Step 6: Final answer
    x = 59,622.64

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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.