Home / 78,826,663.88-108,781,709.13-43,543,738.05

Finding the Fourth Proportional to 78,826,663.88, 108,781,709.13 and 43,543,738.05

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Solution

The fourth proportional to 78,826,663.88, 108,781,709.13 and 43,543,738.05 is: 60,090,862.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,826,663.88 : 108,781,709.13 = 43,543,738.05 : x
  2. Step 2: Convert to fraction form
    78,826,663.88/108,781,709.13 = 43,543,738.05/x
  3. Step 3: Cross multiply
    78,826,663.88x = 108,781,709.13 × 43,543,738.05
  4. Step 4: Simplify right side
    78,826,663.88x = 4,736,762,247,341,395
  5. Step 5: Solve for x
    x = 4,736,762,247,341,395/78,826,663.88
  6. Step 6: Final answer
    x = 60,090,862.84

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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.