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Finding the Fourth Proportional to 65,210.40, 89,995.92 and 36,921.12

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Solution

The fourth proportional to 65,210.40, 89,995.92 and 36,921.12 is: 50,954.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,210.40 : 89,995.92 = 36,921.12 : x
  2. Step 2: Convert to fraction form
    65,210.40/89,995.92 = 36,921.12/x
  3. Step 3: Cross multiply
    65,210.40x = 89,995.92 × 36,921.12
  4. Step 4: Simplify right side
    65,210.40x = 3,322,750,161.83
  5. Step 5: Solve for x
    x = 3,322,750,161.83/65,210.40
  6. Step 6: Final answer
    x = 50,954.30

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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.