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Finding the Fourth Proportional to 67,791.45, 93,499.45 and 40,905.93

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Solution

The fourth proportional to 67,791.45, 93,499.45 and 40,905.93 is: 56,418.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,791.45 : 93,499.45 = 40,905.93 : x
  2. Step 2: Convert to fraction form
    67,791.45/93,499.45 = 40,905.93/x
  3. Step 3: Cross multiply
    67,791.45x = 93,499.45 × 40,905.93
  4. Step 4: Simplify right side
    67,791.45x = 3,824,681,956.74
  5. Step 5: Solve for x
    x = 3,824,681,956.74/67,791.45
  6. Step 6: Final answer
    x = 56,418.35

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1.5x scale

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.