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Finding the Fourth Proportional to 74,903.76, 112,348.20 and 19,499.76

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Solution

The fourth proportional to 74,903.76, 112,348.20 and 19,499.76 is: 29,247.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,903.76 : 112,348.20 = 19,499.76 : x
  2. Step 2: Convert to fraction form
    74,903.76/112,348.20 = 19,499.76/x
  3. Step 3: Cross multiply
    74,903.76x = 112,348.20 × 19,499.76
  4. Step 4: Simplify right side
    74,903.76x = 2,190,762,936.43
  5. Step 5: Solve for x
    x = 2,190,762,936.43/74,903.76
  6. Step 6: Final answer
    x = 29,247.70

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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.