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Finding the Fourth Proportional to 79,885.76, 119,831.52 and 29,960.80

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Solution

The fourth proportional to 79,885.76, 119,831.52 and 29,960.80 is: 44,942.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,885.76 : 119,831.52 = 29,960.80 : x
  2. Step 2: Convert to fraction form
    79,885.76/119,831.52 = 29,960.80/x
  3. Step 3: Cross multiply
    79,885.76x = 119,831.52 × 29,960.80
  4. Step 4: Simplify right side
    79,885.76x = 3,590,248,204.42
  5. Step 5: Solve for x
    x = 3,590,248,204.42/79,885.76
  6. Step 6: Final answer
    x = 44,942.28

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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.