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Finding the Fourth Proportional to 54,950.72, 75,776.16 and 47,019.20

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Solution

The fourth proportional to 54,950.72, 75,776.16 and 47,019.20 is: 64,838.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,950.72 : 75,776.16 = 47,019.20 : x
  2. Step 2: Convert to fraction form
    54,950.72/75,776.16 = 47,019.20/x
  3. Step 3: Cross multiply
    54,950.72x = 75,776.16 × 47,019.20
  4. Step 4: Simplify right side
    54,950.72x = 3,562,934,422.27
  5. Step 5: Solve for x
    x = 3,562,934,422.27/54,950.72
  6. Step 6: Final answer
    x = 64,838.72

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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.