Home / 56,688.69-78,231.11-31,197.99

Finding the Fourth Proportional to 56,688.69, 78,231.11 and 31,197.99

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Solution

The fourth proportional to 56,688.69, 78,231.11 and 31,197.99 is: 43,053.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,688.69 : 78,231.11 = 31,197.99 : x
  2. Step 2: Convert to fraction form
    56,688.69/78,231.11 = 31,197.99/x
  3. Step 3: Cross multiply
    56,688.69x = 78,231.11 × 31,197.99
  4. Step 4: Simplify right side
    56,688.69x = 2,440,653,387.47
  5. Step 5: Solve for x
    x = 2,440,653,387.47/56,688.69
  6. Step 6: Final answer
    x = 43,053.62

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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.