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Finding the Fourth Proportional to 91,772.22, 137,658 and 51,773.06

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Solution

The fourth proportional to 91,772.22, 137,658 and 51,773.06 is: 77,659.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,772.22 : 137,658 = 51,773.06 : x
  2. Step 2: Convert to fraction form
    91,772.22/137,658 = 51,773.06/x
  3. Step 3: Cross multiply
    91,772.22x = 137,658 × 51,773.06
  4. Step 4: Simplify right side
    91,772.22x = 7,126,975,893.48
  5. Step 5: Solve for x
    x = 7,126,975,893.48/91,772.22
  6. Step 6: Final answer
    x = 77,659.40

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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.