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Finding the Fourth Proportional to 65,896.72, 90,937.06 and 35,681.40

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Solution

The fourth proportional to 65,896.72, 90,937.06 and 35,681.40 is: 49,240.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,896.72 : 90,937.06 = 35,681.40 : x
  2. Step 2: Convert to fraction form
    65,896.72/90,937.06 = 35,681.40/x
  3. Step 3: Cross multiply
    65,896.72x = 90,937.06 × 35,681.40
  4. Step 4: Simplify right side
    65,896.72x = 3,244,761,523.48
  5. Step 5: Solve for x
    x = 3,244,761,523.48/65,896.72
  6. Step 6: Final answer
    x = 49,240.11

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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.