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Finding the Fourth Proportional to 79,715.81, 110,012.81 and 43,905.81

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Solution

The fourth proportional to 79,715.81, 110,012.81 and 43,905.81 is: 60,592.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,715.81 : 110,012.81 = 43,905.81 : x
  2. Step 2: Convert to fraction form
    79,715.81/110,012.81 = 43,905.81/x
  3. Step 3: Cross multiply
    79,715.81x = 110,012.81 × 43,905.81
  4. Step 4: Simplify right side
    79,715.81x = 4,830,201,643.19
  5. Step 5: Solve for x
    x = 4,830,201,643.19/79,715.81
  6. Step 6: Final answer
    x = 60,592.77

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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.