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Finding the Fourth Proportional to 61,694,927.79, 85,089,356.89 and 54,236,642.88

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Solution

The fourth proportional to 61,694,927.79, 85,089,356.89 and 54,236,642.88 is: 74,802,925.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,694,927.79 : 85,089,356.89 = 54,236,642.88 : x
  2. Step 2: Convert to fraction form
    61,694,927.79/85,089,356.89 = 54,236,642.88/x
  3. Step 3: Cross multiply
    61,694,927.79x = 85,089,356.89 × 54,236,642.88
  4. Step 4: Simplify right side
    61,694,927.79x = 4,614,961,062,531,798
  5. Step 5: Solve for x
    x = 4,614,961,062,531,798/61,694,927.79
  6. Step 6: Final answer
    x = 74,802,925.10

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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.