Home / 65,780.51-90,777.08-35,565.81

Finding the Fourth Proportional to 65,780.51, 90,777.08 and 35,565.81

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Solution

The fourth proportional to 65,780.51, 90,777.08 and 35,565.81 is: 49,080.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,780.51 : 90,777.08 = 35,565.81 : x
  2. Step 2: Convert to fraction form
    65,780.51/90,777.08 = 35,565.81/x
  3. Step 3: Cross multiply
    65,780.51x = 90,777.08 × 35,565.81
  4. Step 4: Simplify right side
    65,780.51x = 3,228,560,201.81
  5. Step 5: Solve for x
    x = 3,228,560,201.81/65,780.51
  6. Step 6: Final answer
    x = 49,080.81

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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.