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Finding the Fourth Proportional to 76,673.40, 115,053.30 and 29,920.20

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Solution

The fourth proportional to 76,673.40, 115,053.30 and 29,920.20 is: 44,897.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,673.40 : 115,053.30 = 29,920.20 : x
  2. Step 2: Convert to fraction form
    76,673.40/115,053.30 = 29,920.20/x
  3. Step 3: Cross multiply
    76,673.40x = 115,053.30 × 29,920.20
  4. Step 4: Simplify right side
    76,673.40x = 3,442,417,746.66
  5. Step 5: Solve for x
    x = 3,442,417,746.66/76,673.40
  6. Step 6: Final answer
    x = 44,897.16

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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.