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Finding the Fourth Proportional to 70,903.17, 106,360.70 and 18,313.65

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Solution

The fourth proportional to 70,903.17, 106,360.70 and 18,313.65 is: 27,472.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,903.17 : 106,360.70 = 18,313.65 : x
  2. Step 2: Convert to fraction form
    70,903.17/106,360.70 = 18,313.65/x
  3. Step 3: Cross multiply
    70,903.17x = 106,360.70 × 18,313.65
  4. Step 4: Simplify right side
    70,903.17x = 1,947,852,541.99
  5. Step 5: Solve for x
    x = 1,947,852,541.99/70,903.17
  6. Step 6: Final answer
    x = 27,472.01

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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.