Home / 65,736.09-90,722.18-38,887.23

Finding the Fourth Proportional to 65,736.09, 90,722.18 and 38,887.23

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Solution

The fourth proportional to 65,736.09, 90,722.18 and 38,887.23 is: 53,668.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,736.09 : 90,722.18 = 38,887.23 : x
  2. Step 2: Convert to fraction form
    65,736.09/90,722.18 = 38,887.23/x
  3. Step 3: Cross multiply
    65,736.09x = 90,722.18 × 38,887.23
  4. Step 4: Simplify right side
    65,736.09x = 3,527,934,717.19
  5. Step 5: Solve for x
    x = 3,527,934,717.19/65,736.09
  6. Step 6: Final answer
    x = 53,668.16

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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.