Home / 65,660.02-90,589.79-38,811.56

Finding the Fourth Proportional to 65,660.02, 90,589.79 and 38,811.56

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Solution

The fourth proportional to 65,660.02, 90,589.79 and 38,811.56 is: 53,547.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,660.02 : 90,589.79 = 38,811.56 : x
  2. Step 2: Convert to fraction form
    65,660.02/90,589.79 = 38,811.56/x
  3. Step 3: Cross multiply
    65,660.02x = 90,589.79 × 38,811.56
  4. Step 4: Simplify right side
    65,660.02x = 3,515,930,714.05
  5. Step 5: Solve for x
    x = 3,515,930,714.05/65,660.02
  6. Step 6: Final answer
    x = 53,547.51

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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.