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Finding the Fourth Proportional to 75,156.16, 112,740.64 and 19,752

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Solution

The fourth proportional to 75,156.16, 112,740.64 and 19,752 is: 29,629.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,156.16 : 112,740.64 = 19,752 : x
  2. Step 2: Convert to fraction form
    75,156.16/112,740.64 = 19,752/x
  3. Step 3: Cross multiply
    75,156.16x = 112,740.64 × 19,752
  4. Step 4: Simplify right side
    75,156.16x = 2,226,853,121.28
  5. Step 5: Solve for x
    x = 2,226,853,121.28/75,156.16
  6. Step 6: Final answer
    x = 29,629.68

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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.