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Finding the Fourth Proportional to 79,805.78, 119,004.64 and 75,881.48

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Solution

The fourth proportional to 79,805.78, 119,004.64 and 75,881.48 is: 113,152.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,805.78 : 119,004.64 = 75,881.48 : x
  2. Step 2: Convert to fraction form
    79,805.78/119,004.64 = 75,881.48/x
  3. Step 3: Cross multiply
    79,805.78x = 119,004.64 × 75,881.48
  4. Step 4: Simplify right side
    79,805.78x = 9,030,248,210.07
  5. Step 5: Solve for x
    x = 9,030,248,210.07/79,805.78
  6. Step 6: Final answer
    x = 113,152.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.