Home / 56,715.76-78,267.11-31,221.58

Finding the Fourth Proportional to 56,715.76, 78,267.11 and 31,221.58

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Solution

The fourth proportional to 56,715.76, 78,267.11 and 31,221.58 is: 43,085.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,715.76 : 78,267.11 = 31,221.58 : x
  2. Step 2: Convert to fraction form
    56,715.76/78,267.11 = 31,221.58/x
  3. Step 3: Cross multiply
    56,715.76x = 78,267.11 × 31,221.58
  4. Step 4: Simplify right side
    56,715.76x = 2,443,622,836.23
  5. Step 5: Solve for x
    x = 2,443,622,836.23/56,715.76
  6. Step 6: Final answer
    x = 43,085.43

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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.