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Finding the Fourth Proportional to 74,726.62, 112,119.90 and 30,356.80

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Solution

The fourth proportional to 74,726.62, 112,119.90 and 30,356.80 is: 45,547.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,726.62 : 112,119.90 = 30,356.80 : x
  2. Step 2: Convert to fraction form
    74,726.62/112,119.90 = 30,356.80/x
  3. Step 3: Cross multiply
    74,726.62x = 112,119.90 × 30,356.80
  4. Step 4: Simplify right side
    74,726.62x = 3,403,601,380.32
  5. Step 5: Solve for x
    x = 3,403,601,380.32/74,726.62
  6. Step 6: Final answer
    x = 45,547.37

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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.