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Finding the Fourth Proportional to 65,658.00, 90,606.80 and 40,162.49

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Solution

The fourth proportional to 65,658.00, 90,606.80 and 40,162.49 is: 55,423.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,658.00 : 90,606.80 = 40,162.49 : x
  2. Step 2: Convert to fraction form
    65,658.00/90,606.80 = 40,162.49/x
  3. Step 3: Cross multiply
    65,658.00x = 90,606.80 × 40,162.49
  4. Step 4: Simplify right side
    65,658.00x = 3,638,994,940.91
  5. Step 5: Solve for x
    x = 3,638,994,940.91/65,658.00
  6. Step 6: Final answer
    x = 55,423.48

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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.