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Finding the Fourth Proportional to 65,767.80, 98,538.30 and 30,635.40

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Solution

The fourth proportional to 65,767.80, 98,538.30 and 30,635.40 is: 45,900.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,767.80 : 98,538.30 = 30,635.40 : x
  2. Step 2: Convert to fraction form
    65,767.80/98,538.30 = 30,635.40/x
  3. Step 3: Cross multiply
    65,767.80x = 98,538.30 × 30,635.40
  4. Step 4: Simplify right side
    65,767.80x = 3,018,760,235.82
  5. Step 5: Solve for x
    x = 3,018,760,235.82/65,767.80
  6. Step 6: Final answer
    x = 45,900.28

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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.