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Finding the Fourth Proportional to 74,705, 112,059.66 and 19,301

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Solution

The fourth proportional to 74,705, 112,059.66 and 19,301 is: 28,952.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,705 : 112,059.66 = 19,301 : x
  2. Step 2: Convert to fraction form
    74,705/112,059.66 = 19,301/x
  3. Step 3: Cross multiply
    74,705x = 112,059.66 × 19,301
  4. Step 4: Simplify right side
    74,705x = 2,162,863,497.66
  5. Step 5: Solve for x
    x = 2,162,863,497.66/74,705
  6. Step 6: Final answer
    x = 28,952.06

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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.