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Finding the Fourth Proportional to 65,777.16, 90,802.08 and 41,935.80

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Solution

The fourth proportional to 65,777.16, 90,802.08 and 41,935.80 is: 57,890.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,777.16 : 90,802.08 = 41,935.80 : x
  2. Step 2: Convert to fraction form
    65,777.16/90,802.08 = 41,935.80/x
  3. Step 3: Cross multiply
    65,777.16x = 90,802.08 × 41,935.80
  4. Step 4: Simplify right side
    65,777.16x = 3,807,857,866.46
  5. Step 5: Solve for x
    x = 3,807,857,866.46/65,777.16
  6. Step 6: Final answer
    x = 57,890.27

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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.