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Finding the Fourth Proportional to 74,274.24, 111,411.12 and 18,870.24

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Solution

The fourth proportional to 74,274.24, 111,411.12 and 18,870.24 is: 28,305.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,274.24 : 111,411.12 = 18,870.24 : x
  2. Step 2: Convert to fraction form
    74,274.24/111,411.12 = 18,870.24/x
  3. Step 3: Cross multiply
    74,274.24x = 111,411.12 × 18,870.24
  4. Step 4: Simplify right side
    74,274.24x = 2,102,354,573.07
  5. Step 5: Solve for x
    x = 2,102,354,573.07/74,274.24
  6. Step 6: Final answer
    x = 28,305.30

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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.