Home / 65,864.13-90,867.69-43,215.61

Finding the Fourth Proportional to 65,864.13, 90,867.69 and 43,215.61

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Solution

The fourth proportional to 65,864.13, 90,867.69 and 43,215.61 is: 59,621.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,864.13 : 90,867.69 = 43,215.61 : x
  2. Step 2: Convert to fraction form
    65,864.13/90,867.69 = 43,215.61/x
  3. Step 3: Cross multiply
    65,864.13x = 90,867.69 × 43,215.61
  4. Step 4: Simplify right side
    65,864.13x = 3,926,902,652.64
  5. Step 5: Solve for x
    x = 3,926,902,652.64/65,864.13
  6. Step 6: Final answer
    x = 59,621.26

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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.