Home / 78,274,828.49-108,020,558.54-42,995,893.60

Finding the Fourth Proportional to 78,274,828.49, 108,020,558.54 and 42,995,893.60

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Solution

The fourth proportional to 78,274,828.49, 108,020,558.54 and 42,995,893.60 is: 59,335,044.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,274,828.49 : 108,020,558.54 = 42,995,893.60 : x
  2. Step 2: Convert to fraction form
    78,274,828.49/108,020,558.54 = 42,995,893.60/x
  3. Step 3: Cross multiply
    78,274,828.49x = 108,020,558.54 × 42,995,893.60
  4. Step 4: Simplify right side
    78,274,828.49x = 4,644,440,441,840,927
  5. Step 5: Solve for x
    x = 4,644,440,441,840,927/78,274,828.49
  6. Step 6: Final answer
    x = 59,335,044.63

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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.