Home / 78,317,564.60-108,071,912.05-45,279,942.83

Finding the Fourth Proportional to 78,317,564.60, 108,071,912.05 and 45,279,942.83

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Solution

The fourth proportional to 78,317,564.60, 108,071,912.05 and 45,279,942.83 is: 62,482,663.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,317,564.60 : 108,071,912.05 = 45,279,942.83 : x
  2. Step 2: Convert to fraction form
    78,317,564.60/108,071,912.05 = 45,279,942.83/x
  3. Step 3: Cross multiply
    78,317,564.60x = 108,071,912.05 × 45,279,942.83
  4. Step 4: Simplify right side
    78,317,564.60x = 4,893,489,999,152,788
  5. Step 5: Solve for x
    x = 4,893,489,999,152,788/78,317,564.60
  6. Step 6: Final answer
    x = 62,482,663.04

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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.