Home / 65,609.83-90,548.15-40,127.64

Finding the Fourth Proportional to 65,609.83, 90,548.15 and 40,127.64

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Solution

The fourth proportional to 65,609.83, 90,548.15 and 40,127.64 is: 55,380.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,609.83 : 90,548.15 = 40,127.64 : x
  2. Step 2: Convert to fraction form
    65,609.83/90,548.15 = 40,127.64/x
  3. Step 3: Cross multiply
    65,609.83x = 90,548.15 × 40,127.64
  4. Step 4: Simplify right side
    65,609.83x = 3,633,483,025.67
  5. Step 5: Solve for x
    x = 3,633,483,025.67/65,609.83
  6. Step 6: Final answer
    x = 55,380.16

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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.