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Finding the Fourth Proportional to 74,967.69, 112,451.49 and 19,563.69

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Solution

The fourth proportional to 74,967.69, 112,451.49 and 19,563.69 is: 29,345.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,967.69 : 112,451.49 = 19,563.69 : x
  2. Step 2: Convert to fraction form
    74,967.69/112,451.49 = 19,563.69/x
  3. Step 3: Cross multiply
    74,967.69x = 112,451.49 × 19,563.69
  4. Step 4: Simplify right side
    74,967.69x = 2,199,966,090.40
  5. Step 5: Solve for x
    x = 2,199,966,090.40/74,967.69
  6. Step 6: Final answer
    x = 29,345.52

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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.