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Finding the Fourth Proportional to 78,693.93, 118,063.87 and 25,384.73

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Solution

The fourth proportional to 78,693.93, 118,063.87 and 25,384.73 is: 38,084.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,693.93 : 118,063.87 = 25,384.73 : x
  2. Step 2: Convert to fraction form
    78,693.93/118,063.87 = 25,384.73/x
  3. Step 3: Cross multiply
    78,693.93x = 118,063.87 × 25,384.73
  4. Step 4: Simplify right side
    78,693.93x = 2,997,018,872.39
  5. Step 5: Solve for x
    x = 2,997,018,872.39/78,693.93
  6. Step 6: Final answer
    x = 38,084.50

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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.