Home / 65,464.83-90,344.43-38,608.47

Finding the Fourth Proportional to 65,464.83, 90,344.43 and 38,608.47

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Solution

The fourth proportional to 65,464.83, 90,344.43 and 38,608.47 is: 53,281.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,464.83 : 90,344.43 = 38,608.47 : x
  2. Step 2: Convert to fraction form
    65,464.83/90,344.43 = 38,608.47/x
  3. Step 3: Cross multiply
    65,464.83x = 90,344.43 × 38,608.47
  4. Step 4: Simplify right side
    65,464.83x = 3,488,060,215.32
  5. Step 5: Solve for x
    x = 3,488,060,215.32/65,464.83
  6. Step 6: Final answer
    x = 53,281.44

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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.