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Finding the Fourth Proportional to 65,663.40, 90,619.40 and 37,369.32

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Solution

The fourth proportional to 65,663.40, 90,619.40 and 37,369.32 is: 51,571.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,663.40 : 90,619.40 = 37,369.32 : x
  2. Step 2: Convert to fraction form
    65,663.40/90,619.40 = 37,369.32/x
  3. Step 3: Cross multiply
    65,663.40x = 90,619.40 × 37,369.32
  4. Step 4: Simplify right side
    65,663.40x = 3,386,385,356.81
  5. Step 5: Solve for x
    x = 3,386,385,356.81/65,663.40
  6. Step 6: Final answer
    x = 51,571.89

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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.