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Finding the Fourth Proportional to 65,362.74, 90,218.26 and 38,513.67

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Solution

The fourth proportional to 65,362.74, 90,218.26 and 38,513.67 is: 53,159.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,362.74 : 90,218.26 = 38,513.67 : x
  2. Step 2: Convert to fraction form
    65,362.74/90,218.26 = 38,513.67/x
  3. Step 3: Cross multiply
    65,362.74x = 90,218.26 × 38,513.67
  4. Step 4: Simplify right side
    65,362.74x = 3,474,636,101.05
  5. Step 5: Solve for x
    x = 3,474,636,101.05/65,362.74
  6. Step 6: Final answer
    x = 53,159.28

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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.