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Finding the Fourth Proportional to 79,012.16, 118,518 and 26,409.60

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Solution

The fourth proportional to 79,012.16, 118,518 and 26,409.60 is: 39,614.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,012.16 : 118,518 = 26,409.60 : x
  2. Step 2: Convert to fraction form
    79,012.16/118,518 = 26,409.60/x
  3. Step 3: Cross multiply
    79,012.16x = 118,518 × 26,409.60
  4. Step 4: Simplify right side
    79,012.16x = 3,130,012,972.80
  5. Step 5: Solve for x
    x = 3,130,012,972.80/79,012.16
  6. Step 6: Final answer
    x = 39,614.32

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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.