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Finding the Fourth Proportional to 70,955.74, 106,454.13 and 21,037.06

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Solution

The fourth proportional to 70,955.74, 106,454.13 and 21,037.06 is: 31,561.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,955.74 : 106,454.13 = 21,037.06 : x
  2. Step 2: Convert to fraction form
    70,955.74/106,454.13 = 21,037.06/x
  3. Step 3: Cross multiply
    70,955.74x = 106,454.13 × 21,037.06
  4. Step 4: Simplify right side
    70,955.74x = 2,239,481,920.06
  5. Step 5: Solve for x
    x = 2,239,481,920.06/70,955.74
  6. Step 6: Final answer
    x = 31,561.67

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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.