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Finding the Fourth Proportional to 70,888.17, 106,353.05 and 20,969.58

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Solution

The fourth proportional to 70,888.17, 106,353.05 and 20,969.58 is: 31,460.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,888.17 : 106,353.05 = 20,969.58 : x
  2. Step 2: Convert to fraction form
    70,888.17/106,353.05 = 20,969.58/x
  3. Step 3: Cross multiply
    70,888.17x = 106,353.05 × 20,969.58
  4. Step 4: Simplify right side
    70,888.17x = 2,230,178,685.37
  5. Step 5: Solve for x
    x = 2,230,178,685.37/70,888.17
  6. Step 6: Final answer
    x = 31,460.52

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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.