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Finding the Fourth Proportional to 79,181,958.70, 118,772,938.05 and 66,427,374.70

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Solution

The fourth proportional to 79,181,958.70, 118,772,938.05 and 66,427,374.70 is: 99,641,062.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,181,958.70 : 118,772,938.05 = 66,427,374.70 : x
  2. Step 2: Convert to fraction form
    79,181,958.70/118,772,938.05 = 66,427,374.70/x
  3. Step 3: Cross multiply
    79,181,958.70x = 118,772,938.05 × 66,427,374.70
  4. Step 4: Simplify right side
    79,181,958.70x = 7,889,774,460,067,237
  5. Step 5: Solve for x
    x = 7,889,774,460,067,237/79,181,958.70
  6. Step 6: Final answer
    x = 99,641,062.05

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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.