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Finding the Fourth Proportional to 79,232.51, 118,580.86 and 77,100.19

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Solution

The fourth proportional to 79,232.51, 118,580.86 and 77,100.19 is: 115,389.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,232.51 : 118,580.86 = 77,100.19 : x
  2. Step 2: Convert to fraction form
    79,232.51/118,580.86 = 77,100.19/x
  3. Step 3: Cross multiply
    79,232.51x = 118,580.86 × 77,100.19
  4. Step 4: Simplify right side
    79,232.51x = 9,142,605,857.96
  5. Step 5: Solve for x
    x = 9,142,605,857.96/79,232.51
  6. Step 6: Final answer
    x = 115,389.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.