Home / 65,735.22-90,714.51-38,890.92

Finding the Fourth Proportional to 65,735.22, 90,714.51 and 38,890.92

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Solution

The fourth proportional to 65,735.22, 90,714.51 and 38,890.92 is: 53,669.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,735.22 : 90,714.51 = 38,890.92 : x
  2. Step 2: Convert to fraction form
    65,735.22/90,714.51 = 38,890.92/x
  3. Step 3: Cross multiply
    65,735.22x = 90,714.51 × 38,890.92
  4. Step 4: Simplify right side
    65,735.22x = 3,527,970,751.25
  5. Step 5: Solve for x
    x = 3,527,970,751.25/65,735.22
  6. Step 6: Final answer
    x = 53,669.41

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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.