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Finding the Fourth Proportional to 78,846.87, 118,289.16 and 26,256.81

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Solution

The fourth proportional to 78,846.87, 118,289.16 and 26,256.81 is: 39,391.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,846.87 : 118,289.16 = 26,256.81 : x
  2. Step 2: Convert to fraction form
    78,846.87/118,289.16 = 26,256.81/x
  3. Step 3: Cross multiply
    78,846.87x = 118,289.16 × 26,256.81
  4. Step 4: Simplify right side
    78,846.87x = 3,105,895,999.18
  5. Step 5: Solve for x
    x = 3,105,895,999.18/78,846.87
  6. Step 6: Final answer
    x = 39,391.49

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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.