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Finding the Fourth Proportional to 56,861.91, 78,469.52 and 31,368.22

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Solution

The fourth proportional to 56,861.91, 78,469.52 and 31,368.22 is: 43,288.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,861.91 : 78,469.52 = 31,368.22 : x
  2. Step 2: Convert to fraction form
    56,861.91/78,469.52 = 31,368.22/x
  3. Step 3: Cross multiply
    56,861.91x = 78,469.52 × 31,368.22
  4. Step 4: Simplify right side
    56,861.91x = 2,461,449,585.94
  5. Step 5: Solve for x
    x = 2,461,449,585.94/56,861.91
  6. Step 6: Final answer
    x = 43,288.19

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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.