Home / 56,879.70-78,493.47-31,386.30

Finding the Fourth Proportional to 56,879.70, 78,493.47 and 31,386.30

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Solution

The fourth proportional to 56,879.70, 78,493.47 and 31,386.30 is: 43,312.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,879.70 : 78,493.47 = 31,386.30 : x
  2. Step 2: Convert to fraction form
    56,879.70/78,493.47 = 31,386.30/x
  3. Step 3: Cross multiply
    56,879.70x = 78,493.47 × 31,386.30
  4. Step 4: Simplify right side
    56,879.70x = 2,463,619,479.76
  5. Step 5: Solve for x
    x = 2,463,619,479.76/56,879.70
  6. Step 6: Final answer
    x = 43,312.81

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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.