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Finding the Fourth Proportional to 79,772.80, 119,637.60 and 23,612.80

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Solution

The fourth proportional to 79,772.80, 119,637.60 and 23,612.80 is: 35,412.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,772.80 : 119,637.60 = 23,612.80 : x
  2. Step 2: Convert to fraction form
    79,772.80/119,637.60 = 23,612.80/x
  3. Step 3: Cross multiply
    79,772.80x = 119,637.60 × 23,612.80
  4. Step 4: Simplify right side
    79,772.80x = 2,824,978,721.28
  5. Step 5: Solve for x
    x = 2,824,978,721.28/79,772.80
  6. Step 6: Final answer
    x = 35,412.81

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1.5x scale

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.