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Finding the Fourth Proportional to 56,703.58, 78,255.79 and 31,214.99

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Solution

The fourth proportional to 56,703.58, 78,255.79 and 31,214.99 is: 43,079.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,703.58 : 78,255.79 = 31,214.99 : x
  2. Step 2: Convert to fraction form
    56,703.58/78,255.79 = 31,214.99/x
  3. Step 3: Cross multiply
    56,703.58x = 78,255.79 × 31,214.99
  4. Step 4: Simplify right side
    56,703.58x = 2,442,753,819.89
  5. Step 5: Solve for x
    x = 2,442,753,819.89/56,703.58
  6. Step 6: Final answer
    x = 43,079.36

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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.