Home / 74,810.28-112,118.44-30,385

Finding the Fourth Proportional to 74,810.28, 112,118.44 and 30,385

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Solution

The fourth proportional to 74,810.28, 112,118.44 and 30,385 is: 45,538.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,810.28 : 112,118.44 = 30,385 : x
  2. Step 2: Convert to fraction form
    74,810.28/112,118.44 = 30,385/x
  3. Step 3: Cross multiply
    74,810.28x = 112,118.44 × 30,385
  4. Step 4: Simplify right side
    74,810.28x = 3,406,718,799.40
  5. Step 5: Solve for x
    x = 3,406,718,799.40/74,810.28
  6. Step 6: Final answer
    x = 45,538.11

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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.