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Finding the Fourth Proportional to 77,307.40, 115,944.90 and 37,892.80

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Solution

The fourth proportional to 77,307.40, 115,944.90 and 37,892.80 is: 56,831.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,307.40 : 115,944.90 = 37,892.80 : x
  2. Step 2: Convert to fraction form
    77,307.40/115,944.90 = 37,892.80/x
  3. Step 3: Cross multiply
    77,307.40x = 115,944.90 × 37,892.80
  4. Step 4: Simplify right side
    77,307.40x = 4,393,476,906.72
  5. Step 5: Solve for x
    x = 4,393,476,906.72/77,307.40
  6. Step 6: Final answer
    x = 56,831.26

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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.