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Finding the Fourth Proportional to 91,788.98, 137,722.93 and 49,699.13

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Solution

The fourth proportional to 91,788.98, 137,722.93 and 49,699.13 is: 74,570.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,788.98 : 137,722.93 = 49,699.13 : x
  2. Step 2: Convert to fraction form
    91,788.98/137,722.93 = 49,699.13/x
  3. Step 3: Cross multiply
    91,788.98x = 137,722.93 × 49,699.13
  4. Step 4: Simplify right side
    91,788.98x = 6,844,709,802.05
  5. Step 5: Solve for x
    x = 6,844,709,802.05/91,788.98
  6. Step 6: Final answer
    x = 74,570.06

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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.