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Finding the Fourth Proportional to 65,363.74, 90,219.64 and 38,514.67

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Solution

The fourth proportional to 65,363.74, 90,219.64 and 38,514.67 is: 53,160.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,363.74 : 90,219.64 = 38,514.67 : x
  2. Step 2: Convert to fraction form
    65,363.74/90,219.64 = 38,514.67/x
  3. Step 3: Cross multiply
    65,363.74x = 90,219.64 × 38,514.67
  4. Step 4: Simplify right side
    65,363.74x = 3,474,779,662.12
  5. Step 5: Solve for x
    x = 3,474,779,662.12/65,363.74
  6. Step 6: Final answer
    x = 53,160.66

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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.