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Finding the Fourth Proportional to 65,870.78, 98,805.76 and 21,497.56

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Solution

The fourth proportional to 65,870.78, 98,805.76 and 21,497.56 is: 32,246.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,870.78 : 98,805.76 = 21,497.56 : x
  2. Step 2: Convert to fraction form
    65,870.78/98,805.76 = 21,497.56/x
  3. Step 3: Cross multiply
    65,870.78x = 98,805.76 × 21,497.56
  4. Step 4: Simplify right side
    65,870.78x = 2,124,082,453.19
  5. Step 5: Solve for x
    x = 2,124,082,453.19/65,870.78
  6. Step 6: Final answer
    x = 32,246.20

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1.5x scale

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.