Home / 56,812.61-78,397.87-31,317.65

Finding the Fourth Proportional to 56,812.61, 78,397.87 and 31,317.65

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Solution

The fourth proportional to 56,812.61, 78,397.87 and 31,317.65 is: 43,216.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,812.61 : 78,397.87 = 31,317.65 : x
  2. Step 2: Convert to fraction form
    56,812.61/78,397.87 = 31,317.65/x
  3. Step 3: Cross multiply
    56,812.61x = 78,397.87 × 31,317.65
  4. Step 4: Simplify right side
    56,812.61x = 2,455,237,053.41
  5. Step 5: Solve for x
    x = 2,455,237,053.41/56,812.61
  6. Step 6: Final answer
    x = 43,216.41

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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.