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Finding the Fourth Proportional to 74,653.08, 103,020.17 and 42,821.30

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Solution

The fourth proportional to 74,653.08, 103,020.17 and 42,821.30 is: 59,092.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,653.08 : 103,020.17 = 42,821.30 : x
  2. Step 2: Convert to fraction form
    74,653.08/103,020.17 = 42,821.30/x
  3. Step 3: Cross multiply
    74,653.08x = 103,020.17 × 42,821.30
  4. Step 4: Simplify right side
    74,653.08x = 4,411,456,876.41
  5. Step 5: Solve for x
    x = 4,411,456,876.41/74,653.08
  6. Step 6: Final answer
    x = 59,092.76

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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.