Home / 91,780,910.66-137,630,966.60-48,640,006.51

Finding the Fourth Proportional to 91,780,910.66, 137,630,966.60 and 48,640,006.51

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Solution

The fourth proportional to 91,780,910.66, 137,630,966.60 and 48,640,006.51 is: 72,938,599.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,780,910.66 : 137,630,966.60 = 48,640,006.51 : x
  2. Step 2: Convert to fraction form
    91,780,910.66/137,630,966.60 = 48,640,006.51/x
  3. Step 3: Cross multiply
    91,780,910.66x = 137,630,966.60 × 48,640,006.51
  4. Step 4: Simplify right side
    91,780,910.66x = 6,694,371,111,179,115
  5. Step 5: Solve for x
    x = 6,694,371,111,179,115/91,780,910.66
  6. Step 6: Final answer
    x = 72,938,599.79

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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.