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Finding the Fourth Proportional to 75,300.72, 112,949.16 and 19,897.20

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Solution

The fourth proportional to 75,300.72, 112,949.16 and 19,897.20 is: 29,845.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,300.72 : 112,949.16 = 19,897.20 : x
  2. Step 2: Convert to fraction form
    75,300.72/112,949.16 = 19,897.20/x
  3. Step 3: Cross multiply
    75,300.72x = 112,949.16 × 19,897.20
  4. Step 4: Simplify right side
    75,300.72x = 2,247,372,026.35
  5. Step 5: Solve for x
    x = 2,247,372,026.35/75,300.72
  6. Step 6: Final answer
    x = 29,845.29

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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.