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Finding the Fourth Proportional to 77,776.91, 107,330.91 and 43,785.32

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Solution

The fourth proportional to 77,776.91, 107,330.91 and 43,785.32 is: 60,423.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,776.91 : 107,330.91 = 43,785.32 : x
  2. Step 2: Convert to fraction form
    77,776.91/107,330.91 = 43,785.32/x
  3. Step 3: Cross multiply
    77,776.91x = 107,330.91 × 43,785.32
  4. Step 4: Simplify right side
    77,776.91x = 4,699,518,240.24
  5. Step 5: Solve for x
    x = 4,699,518,240.24/77,776.91
  6. Step 6: Final answer
    x = 60,423.05

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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.