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Finding the Fourth Proportional to 40,055.79, 60,078.48 and 10,475.91

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Solution

The fourth proportional to 40,055.79, 60,078.48 and 10,475.91 is: 15,712.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,055.79 : 60,078.48 = 10,475.91 : x
  2. Step 2: Convert to fraction form
    40,055.79/60,078.48 = 10,475.91/x
  3. Step 3: Cross multiply
    40,055.79x = 60,078.48 × 10,475.91
  4. Step 4: Simplify right side
    40,055.79x = 629,376,710.13
  5. Step 5: Solve for x
    x = 629,376,710.13/40,055.79
  6. Step 6: Final answer
    x = 15,712.50

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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.