Home / 65,387.36-90,253.86-38,538.56

Finding the Fourth Proportional to 65,387.36, 90,253.86 and 38,538.56

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Solution

The fourth proportional to 65,387.36, 90,253.86 and 38,538.56 is: 53,194.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,387.36 : 90,253.86 = 38,538.56 : x
  2. Step 2: Convert to fraction form
    65,387.36/90,253.86 = 38,538.56/x
  3. Step 3: Cross multiply
    65,387.36x = 90,253.86 × 38,538.56
  4. Step 4: Simplify right side
    65,387.36x = 3,478,253,798.84
  5. Step 5: Solve for x
    x = 3,478,253,798.84/65,387.36
  6. Step 6: Final answer
    x = 53,194.59

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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.