Home / 65,021.23-89,658.39-42,318.34

Finding the Fourth Proportional to 65,021.23, 89,658.39 and 42,318.34

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Solution

The fourth proportional to 65,021.23, 89,658.39 and 42,318.34 is: 58,353.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,021.23 : 89,658.39 = 42,318.34 : x
  2. Step 2: Convert to fraction form
    65,021.23/89,658.39 = 42,318.34/x
  3. Step 3: Cross multiply
    65,021.23x = 89,658.39 × 42,318.34
  4. Step 4: Simplify right side
    65,021.23x = 3,794,194,231.87
  5. Step 5: Solve for x
    x = 3,794,194,231.87/65,021.23
  6. Step 6: Final answer
    x = 58,353.16

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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.