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Finding the Fourth Proportional to 74,889.55, 103,348.40 and 40,899.04

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Solution

The fourth proportional to 74,889.55, 103,348.40 and 40,899.04 is: 56,441.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,889.55 : 103,348.40 = 40,899.04 : x
  2. Step 2: Convert to fraction form
    74,889.55/103,348.40 = 40,899.04/x
  3. Step 3: Cross multiply
    74,889.55x = 103,348.40 × 40,899.04
  4. Step 4: Simplify right side
    74,889.55x = 4,226,850,191.38
  5. Step 5: Solve for x
    x = 4,226,850,191.38/74,889.55
  6. Step 6: Final answer
    x = 56,441.12

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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.