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Finding the Fourth Proportional to 74,672.10, 112,008.15 and 27,918.90

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Solution

The fourth proportional to 74,672.10, 112,008.15 and 27,918.90 is: 41,878.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,672.10 : 112,008.15 = 27,918.90 : x
  2. Step 2: Convert to fraction form
    74,672.10/112,008.15 = 27,918.90/x
  3. Step 3: Cross multiply
    74,672.10x = 112,008.15 × 27,918.90
  4. Step 4: Simplify right side
    74,672.10x = 3,127,144,339.04
  5. Step 5: Solve for x
    x = 3,127,144,339.04/74,672.10
  6. Step 6: Final answer
    x = 41,878.35

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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.