Home / 65,475.02-90,351.50-38,618.66

Finding the Fourth Proportional to 65,475.02, 90,351.50 and 38,618.66

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Solution

The fourth proportional to 65,475.02, 90,351.50 and 38,618.66 is: 53,291.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,475.02 : 90,351.50 = 38,618.66 : x
  2. Step 2: Convert to fraction form
    65,475.02/90,351.50 = 38,618.66/x
  3. Step 3: Cross multiply
    65,475.02x = 90,351.50 × 38,618.66
  4. Step 4: Simplify right side
    65,475.02x = 3,489,253,858.99
  5. Step 5: Solve for x
    x = 3,489,253,858.99/65,475.02
  6. Step 6: Final answer
    x = 53,291.38

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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.