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Finding the Fourth Proportional to 79,693.06, 109,966.86 and 45,699.80

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Solution

The fourth proportional to 79,693.06, 109,966.86 and 45,699.80 is: 63,060.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,693.06 : 109,966.86 = 45,699.80 : x
  2. Step 2: Convert to fraction form
    79,693.06/109,966.86 = 45,699.80/x
  3. Step 3: Cross multiply
    79,693.06x = 109,966.86 × 45,699.80
  4. Step 4: Simplify right side
    79,693.06x = 5,025,463,508.63
  5. Step 5: Solve for x
    x = 5,025,463,508.63/79,693.06
  6. Step 6: Final answer
    x = 63,060.24

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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.