Home / 74,805.45-112,111.23-30,380.60

Finding the Fourth Proportional to 74,805.45, 112,111.23 and 30,380.60

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Solution

The fourth proportional to 74,805.45, 112,111.23 and 30,380.60 is: 45,531.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,805.45 : 112,111.23 = 30,380.60 : x
  2. Step 2: Convert to fraction form
    74,805.45/112,111.23 = 30,380.60/x
  3. Step 3: Cross multiply
    74,805.45x = 112,111.23 × 30,380.60
  4. Step 4: Simplify right side
    74,805.45x = 3,406,006,153.86
  5. Step 5: Solve for x
    x = 3,406,006,153.86/74,805.45
  6. Step 6: Final answer
    x = 45,531.52

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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.