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Finding the Fourth Proportional to 65,877.94, 90,911.53 and 35,663.24

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Solution

The fourth proportional to 65,877.94, 90,911.53 and 35,663.24 is: 49,215.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,877.94 : 90,911.53 = 35,663.24 : x
  2. Step 2: Convert to fraction form
    65,877.94/90,911.53 = 35,663.24/x
  3. Step 3: Cross multiply
    65,877.94x = 90,911.53 × 35,663.24
  4. Step 4: Simplify right side
    65,877.94x = 3,242,199,169.44
  5. Step 5: Solve for x
    x = 3,242,199,169.44/65,877.94
  6. Step 6: Final answer
    x = 49,215.25

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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.