Home / 79,124,345.29-118,675,743.50-20,827,141.56

Finding the Fourth Proportional to 79,124,345.29, 118,675,743.50 and 20,827,141.56

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Solution

The fourth proportional to 79,124,345.29, 118,675,743.50 and 20,827,141.56 is: 31,237,876.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,124,345.29 : 118,675,743.50 = 20,827,141.56 : x
  2. Step 2: Convert to fraction form
    79,124,345.29/118,675,743.50 = 20,827,141.56/x
  3. Step 3: Cross multiply
    79,124,345.29x = 118,675,743.50 × 20,827,141.56
  4. Step 4: Simplify right side
    79,124,345.29x = 2,471,676,509,071,439
  5. Step 5: Solve for x
    x = 2,471,676,509,071,439/79,124,345.29
  6. Step 6: Final answer
    x = 31,237,876.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.