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Finding the Fourth Proportional to 65,390.96, 98,075.46 and 18,632.72

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Solution

The fourth proportional to 65,390.96, 98,075.46 and 18,632.72 is: 27,945.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,390.96 : 98,075.46 = 18,632.72 : x
  2. Step 2: Convert to fraction form
    65,390.96/98,075.46 = 18,632.72/x
  3. Step 3: Cross multiply
    65,390.96x = 98,075.46 × 18,632.72
  4. Step 4: Simplify right side
    65,390.96x = 1,827,412,585.05
  5. Step 5: Solve for x
    x = 1,827,412,585.05/65,390.96
  6. Step 6: Final answer
    x = 27,945.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.