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Finding the Fourth Proportional to 71,736,580.84, 98,998,665.06 and 40,801,203.40

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Solution

The fourth proportional to 71,736,580.84, 98,998,665.06 and 40,801,203.40 is: 56,306,902.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,736,580.84 : 98,998,665.06 = 40,801,203.40 : x
  2. Step 2: Convert to fraction form
    71,736,580.84/98,998,665.06 = 40,801,203.40/x
  3. Step 3: Cross multiply
    71,736,580.84x = 98,998,665.06 × 40,801,203.40
  4. Step 4: Simplify right side
    71,736,580.84x = 4,039,264,669,441,533
  5. Step 5: Solve for x
    x = 4,039,264,669,441,533/71,736,580.84
  6. Step 6: Final answer
    x = 56,306,902.59

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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.