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Finding the Fourth Proportional to 70,330.87, 105,423.40 and 43,975.09

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Solution

The fourth proportional to 70,330.87, 105,423.40 and 43,975.09 is: 65,917.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,330.87 : 105,423.40 = 43,975.09 : x
  2. Step 2: Convert to fraction form
    70,330.87/105,423.40 = 43,975.09/x
  3. Step 3: Cross multiply
    70,330.87x = 105,423.40 × 43,975.09
  4. Step 4: Simplify right side
    70,330.87x = 4,636,003,503.11
  5. Step 5: Solve for x
    x = 4,636,003,503.11/70,330.87
  6. Step 6: Final answer
    x = 65,917.05

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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.