Home / 78,646,323.72-108,487,481.70-49,226,581

Finding the Fourth Proportional to 78,646,323.72, 108,487,481.70 and 49,226,581

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Solution

The fourth proportional to 78,646,323.72, 108,487,481.70 and 49,226,581 is: 67,904,862.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,646,323.72 : 108,487,481.70 = 49,226,581 : x
  2. Step 2: Convert to fraction form
    78,646,323.72/108,487,481.70 = 49,226,581/x
  3. Step 3: Cross multiply
    78,646,323.72x = 108,487,481.70 × 49,226,581
  4. Step 4: Simplify right side
    78,646,323.72x = 5,340,467,805,391,068
  5. Step 5: Solve for x
    x = 5,340,467,805,391,068/78,646,323.72
  6. Step 6: Final answer
    x = 67,904,862.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.