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Finding the Fourth Proportional to 70,916.52, 106,374.44 and 20,996.92

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Solution

The fourth proportional to 70,916.52, 106,374.44 and 20,996.92 is: 31,495.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,916.52 : 106,374.44 = 20,996.92 : x
  2. Step 2: Convert to fraction form
    70,916.52/106,374.44 = 20,996.92/x
  3. Step 3: Cross multiply
    70,916.52x = 106,374.44 × 20,996.92
  4. Step 4: Simplify right side
    70,916.52x = 2,233,535,606.72
  5. Step 5: Solve for x
    x = 2,233,535,606.72/70,916.52
  6. Step 6: Final answer
    x = 31,495.28

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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.