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Finding the Fourth Proportional to 56,367.40, 77,786.98 and 31,216.88

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Solution

The fourth proportional to 56,367.40, 77,786.98 and 31,216.88 is: 43,079.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,367.40 : 77,786.98 = 31,216.88 : x
  2. Step 2: Convert to fraction form
    56,367.40/77,786.98 = 31,216.88/x
  3. Step 3: Cross multiply
    56,367.40x = 77,786.98 × 31,216.88
  4. Step 4: Simplify right side
    56,367.40x = 2,428,266,820.22
  5. Step 5: Solve for x
    x = 2,428,266,820.22/56,367.40
  6. Step 6: Final answer
    x = 43,079.28

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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.