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Finding the Fourth Proportional to 71,966,670.77, 99,305,470.94 and 40,602,891.30

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Solution

The fourth proportional to 71,966,670.77, 99,305,470.94 and 40,602,891.30 is: 56,027,174.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,966,670.77 : 99,305,470.94 = 40,602,891.30 : x
  2. Step 2: Convert to fraction form
    71,966,670.77/99,305,470.94 = 40,602,891.30/x
  3. Step 3: Cross multiply
    71,966,670.77x = 99,305,470.94 × 40,602,891.30
  4. Step 4: Simplify right side
    71,966,670.77x = 4,032,089,241,869,114
  5. Step 5: Solve for x
    x = 4,032,089,241,869,114/71,966,670.77
  6. Step 6: Final answer
    x = 56,027,174.79

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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.