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Finding the Fourth Proportional to 78,888.54, 118,289.07 and 26,269.32

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Solution

The fourth proportional to 78,888.54, 118,289.07 and 26,269.32 is: 39,389.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,888.54 : 118,289.07 = 26,269.32 : x
  2. Step 2: Convert to fraction form
    78,888.54/118,289.07 = 26,269.32/x
  3. Step 3: Cross multiply
    78,888.54x = 118,289.07 × 26,269.32
  4. Step 4: Simplify right side
    78,888.54x = 3,107,373,432.33
  5. Step 5: Solve for x
    x = 3,107,373,432.33/78,888.54
  6. Step 6: Final answer
    x = 39,389.41

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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.