Home / 56,810.51-78,398.50-31,317.30

Finding the Fourth Proportional to 56,810.51, 78,398.50 and 31,317.30

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Solution

The fourth proportional to 56,810.51, 78,398.50 and 31,317.30 is: 43,217.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,810.51 : 78,398.50 = 31,317.30 : x
  2. Step 2: Convert to fraction form
    56,810.51/78,398.50 = 31,317.30/x
  3. Step 3: Cross multiply
    56,810.51x = 78,398.50 × 31,317.30
  4. Step 4: Simplify right side
    56,810.51x = 2,455,229,324.48
  5. Step 5: Solve for x
    x = 2,455,229,324.48/56,810.51
  6. Step 6: Final answer
    x = 43,217.87

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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.