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Finding the Fourth Proportional to 65,130.78, 89,882.09 and 36,450.21

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Solution

The fourth proportional to 65,130.78, 89,882.09 and 36,450.21 is: 50,302.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,130.78 : 89,882.09 = 36,450.21 : x
  2. Step 2: Convert to fraction form
    65,130.78/89,882.09 = 36,450.21/x
  3. Step 3: Cross multiply
    65,130.78x = 89,882.09 × 36,450.21
  4. Step 4: Simplify right side
    65,130.78x = 3,276,221,210.55
  5. Step 5: Solve for x
    x = 3,276,221,210.55/65,130.78
  6. Step 6: Final answer
    x = 50,302.20

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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.