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Finding the Fourth Proportional to 56,351.94, 77,682.84 and 42,899.76

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Solution

The fourth proportional to 56,351.94, 77,682.84 and 42,899.76 is: 59,138.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,351.94 : 77,682.84 = 42,899.76 : x
  2. Step 2: Convert to fraction form
    56,351.94/77,682.84 = 42,899.76/x
  3. Step 3: Cross multiply
    56,351.94x = 77,682.84 × 42,899.76
  4. Step 4: Simplify right side
    56,351.94x = 3,332,575,192.12
  5. Step 5: Solve for x
    x = 3,332,575,192.12/56,351.94
  6. Step 6: Final answer
    x = 59,138.61

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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.