Home / 78,941,477.78-108,933,709.04-45,899,382.74

Finding the Fourth Proportional to 78,941,477.78, 108,933,709.04 and 45,899,382.74

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Solution

The fourth proportional to 78,941,477.78, 108,933,709.04 and 45,899,382.74 is: 63,337,932.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,941,477.78 : 108,933,709.04 = 45,899,382.74 : x
  2. Step 2: Convert to fraction form
    78,941,477.78/108,933,709.04 = 45,899,382.74/x
  3. Step 3: Cross multiply
    78,941,477.78x = 108,933,709.04 × 45,899,382.74
  4. Step 4: Simplify right side
    78,941,477.78x = 4,999,990,004,171,128
  5. Step 5: Solve for x
    x = 4,999,990,004,171,128/78,941,477.78
  6. Step 6: Final answer
    x = 63,337,932.66

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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.