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Finding the Fourth Proportional to 70,330.69, 105,423.12 and 43,974.91

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Solution

The fourth proportional to 70,330.69, 105,423.12 and 43,974.91 is: 65,916.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,330.69 : 105,423.12 = 43,974.91 : x
  2. Step 2: Convert to fraction form
    70,330.69/105,423.12 = 43,974.91/x
  3. Step 3: Cross multiply
    70,330.69x = 105,423.12 × 43,974.91
  4. Step 4: Simplify right side
    70,330.69x = 4,635,972,213.92
  5. Step 5: Solve for x
    x = 4,635,972,213.92/70,330.69
  6. Step 6: Final answer
    x = 65,916.77

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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.