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Finding the Fourth Proportional to 65,877.98, 90,911.50 and 35,663.29

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Solution

The fourth proportional to 65,877.98, 90,911.50 and 35,663.29 is: 49,215.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,877.98 : 90,911.50 = 35,663.29 : x
  2. Step 2: Convert to fraction form
    65,877.98/90,911.50 = 35,663.29/x
  3. Step 3: Cross multiply
    65,877.98x = 90,911.50 × 35,663.29
  4. Step 4: Simplify right side
    65,877.98x = 3,242,203,188.84
  5. Step 5: Solve for x
    x = 3,242,203,188.84/65,877.98
  6. Step 6: Final answer
    x = 49,215.28

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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.