Home / 39,870,775.26-55,021,691.88-21,536,060.76

Finding the Fourth Proportional to 39,870,775.26, 55,021,691.88 and 21,536,060.76

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Solution

The fourth proportional to 39,870,775.26, 55,021,691.88 and 21,536,060.76 is: 29,719,775.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,870,775.26 : 55,021,691.88 = 21,536,060.76 : x
  2. Step 2: Convert to fraction form
    39,870,775.26/55,021,691.88 = 21,536,060.76/x
  3. Step 3: Cross multiply
    39,870,775.26x = 55,021,691.88 × 21,536,060.76
  4. Step 4: Simplify right side
    39,870,775.26x = 1,184,950,499,445,678.75
  5. Step 5: Solve for x
    x = 1,184,950,499,445,678.75/39,870,775.26
  6. Step 6: Final answer
    x = 29,719,775.74

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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.