Home / 56,311.76-77,709.12-31,161.26

Finding the Fourth Proportional to 56,311.76, 77,709.12 and 31,161.26

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Solution

The fourth proportional to 56,311.76, 77,709.12 and 31,161.26 is: 43,001.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,311.76 : 77,709.12 = 31,161.26 : x
  2. Step 2: Convert to fraction form
    56,311.76/77,709.12 = 31,161.26/x
  3. Step 3: Cross multiply
    56,311.76x = 77,709.12 × 31,161.26
  4. Step 4: Simplify right side
    56,311.76x = 2,421,514,092.69
  5. Step 5: Solve for x
    x = 2,421,514,092.69/56,311.76
  6. Step 6: Final answer
    x = 43,001.93

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1.5x scale

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.