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Finding the Fourth Proportional to 65,812.51, 90,821.16 and 37,132.13

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Solution

The fourth proportional to 65,812.51, 90,821.16 and 37,132.13 is: 51,242.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,812.51 : 90,821.16 = 37,132.13 : x
  2. Step 2: Convert to fraction form
    65,812.51/90,821.16 = 37,132.13/x
  3. Step 3: Cross multiply
    65,812.51x = 90,821.16 × 37,132.13
  4. Step 4: Simplify right side
    65,812.51x = 3,372,383,119.87
  5. Step 5: Solve for x
    x = 3,372,383,119.87/65,812.51
  6. Step 6: Final answer
    x = 51,242.28

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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.