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Finding the Fourth Proportional to 77,560.72, 107,030.94 and 47,396.53

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Solution

The fourth proportional to 77,560.72, 107,030.94 and 47,396.53 is: 65,405.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,560.72 : 107,030.94 = 47,396.53 : x
  2. Step 2: Convert to fraction form
    77,560.72/107,030.94 = 47,396.53/x
  3. Step 3: Cross multiply
    77,560.72x = 107,030.94 × 47,396.53
  4. Step 4: Simplify right side
    77,560.72x = 5,072,894,623.48
  5. Step 5: Solve for x
    x = 5,072,894,623.48/77,560.72
  6. Step 6: Final answer
    x = 65,405.46

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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.