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Finding the Fourth Proportional to 78,838.92, 118,259.60 and 26,248.46

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Solution

The fourth proportional to 78,838.92, 118,259.60 and 26,248.46 is: 39,373.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,838.92 : 118,259.60 = 26,248.46 : x
  2. Step 2: Convert to fraction form
    78,838.92/118,259.60 = 26,248.46/x
  3. Step 3: Cross multiply
    78,838.92x = 118,259.60 × 26,248.46
  4. Step 4: Simplify right side
    78,838.92x = 3,104,131,657.68
  5. Step 5: Solve for x
    x = 3,104,131,657.68/78,838.92
  6. Step 6: Final answer
    x = 39,373.09

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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.