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Finding the Fourth Proportional to 77,223.98, 115,715.01 and 61,637.42

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Solution

The fourth proportional to 77,223.98, 115,715.01 and 61,637.42 is: 92,359.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,223.98 : 115,715.01 = 61,637.42 : x
  2. Step 2: Convert to fraction form
    77,223.98/115,715.01 = 61,637.42/x
  3. Step 3: Cross multiply
    77,223.98x = 115,715.01 × 61,637.42
  4. Step 4: Simplify right side
    77,223.98x = 7,132,374,671.67
  5. Step 5: Solve for x
    x = 7,132,374,671.67/77,223.98
  6. Step 6: Final answer
    x = 92,359.58

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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.