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Finding the Fourth Proportional to 71,312.74, 106,969.01 and 21,392.74

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Solution

The fourth proportional to 71,312.74, 106,969.01 and 21,392.74 is: 32,089.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,312.74 : 106,969.01 = 21,392.74 : x
  2. Step 2: Convert to fraction form
    71,312.74/106,969.01 = 21,392.74/x
  3. Step 3: Cross multiply
    71,312.74x = 106,969.01 × 21,392.74
  4. Step 4: Simplify right side
    71,312.74x = 2,288,360,245.73
  5. Step 5: Solve for x
    x = 2,288,360,245.73/71,312.74
  6. Step 6: Final answer
    x = 32,089.08

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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.