Home / 65,648.16-90,573.12-38,791.44

Finding the Fourth Proportional to 65,648.16, 90,573.12 and 38,791.44

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Solution

The fourth proportional to 65,648.16, 90,573.12 and 38,791.44 is: 53,519.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,648.16 : 90,573.12 = 38,791.44 : x
  2. Step 2: Convert to fraction form
    65,648.16/90,573.12 = 38,791.44/x
  3. Step 3: Cross multiply
    65,648.16x = 90,573.12 × 38,791.44
  4. Step 4: Simplify right side
    65,648.16x = 3,513,461,750.09
  5. Step 5: Solve for x
    x = 3,513,461,750.09/65,648.16
  6. Step 6: Final answer
    x = 53,519.58

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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.