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Finding the Fourth Proportional to 74,704, 112,058.16 and 19,300

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Solution

The fourth proportional to 74,704, 112,058.16 and 19,300 is: 28,950.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,704 : 112,058.16 = 19,300 : x
  2. Step 2: Convert to fraction form
    74,704/112,058.16 = 19,300/x
  3. Step 3: Cross multiply
    74,704x = 112,058.16 × 19,300
  4. Step 4: Simplify right side
    74,704x = 2,162,722,488
  5. Step 5: Solve for x
    x = 2,162,722,488/74,704
  6. Step 6: Final answer
    x = 28,950.56

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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.