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Finding the Fourth Proportional to 79,762.91, 110,112.68 and 61,817.63

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Solution

The fourth proportional to 79,762.91, 110,112.68 and 61,817.63 is: 85,339.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,762.91 : 110,112.68 = 61,817.63 : x
  2. Step 2: Convert to fraction form
    79,762.91/110,112.68 = 61,817.63/x
  3. Step 3: Cross multiply
    79,762.91x = 110,112.68 × 61,817.63
  4. Step 4: Simplify right side
    79,762.91x = 6,806,904,601.46
  5. Step 5: Solve for x
    x = 6,806,904,601.46/79,762.91
  6. Step 6: Final answer
    x = 85,339.22

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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.