Home / 65,817.21-90,798.91-38,579.49

Finding the Fourth Proportional to 65,817.21, 90,798.91 and 38,579.49

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Solution

The fourth proportional to 65,817.21, 90,798.91 and 38,579.49 is: 53,222.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,817.21 : 90,798.91 = 38,579.49 : x
  2. Step 2: Convert to fraction form
    65,817.21/90,798.91 = 38,579.49/x
  3. Step 3: Cross multiply
    65,817.21x = 90,798.91 × 38,579.49
  4. Step 4: Simplify right side
    65,817.21x = 3,502,975,640.36
  5. Step 5: Solve for x
    x = 3,502,975,640.36/65,817.21
  6. Step 6: Final answer
    x = 53,222.79

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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.