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Finding the Fourth Proportional to 90,424.50, 124,787.31 and 50,139.96

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Solution

The fourth proportional to 90,424.50, 124,787.31 and 50,139.96 is: 69,193.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,424.50 : 124,787.31 = 50,139.96 : x
  2. Step 2: Convert to fraction form
    90,424.50/124,787.31 = 50,139.96/x
  3. Step 3: Cross multiply
    90,424.50x = 124,787.31 × 50,139.96
  4. Step 4: Simplify right side
    90,424.50x = 6,256,830,731.91
  5. Step 5: Solve for x
    x = 6,256,830,731.91/90,424.50
  6. Step 6: Final answer
    x = 69,193.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.