Home / 65,504.16-90,370.08-40,309.92

Finding the Fourth Proportional to 65,504.16, 90,370.08 and 40,309.92

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Solution

The fourth proportional to 65,504.16, 90,370.08 and 40,309.92 is: 55,611.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,504.16 : 90,370.08 = 40,309.92 : x
  2. Step 2: Convert to fraction form
    65,504.16/90,370.08 = 40,309.92/x
  3. Step 3: Cross multiply
    65,504.16x = 90,370.08 × 40,309.92
  4. Step 4: Simplify right side
    65,504.16x = 3,642,810,695.19
  5. Step 5: Solve for x
    x = 3,642,810,695.19/65,504.16
  6. Step 6: Final answer
    x = 55,611.90

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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.