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Finding the Fourth Proportional to 51,393.55, 70,944.96 and 31,256.89

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Solution

The fourth proportional to 51,393.55, 70,944.96 and 31,256.89 is: 43,147.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,393.55 : 70,944.96 = 31,256.89 : x
  2. Step 2: Convert to fraction form
    51,393.55/70,944.96 = 31,256.89/x
  3. Step 3: Cross multiply
    51,393.55x = 70,944.96 × 31,256.89
  4. Step 4: Simplify right side
    51,393.55x = 2,217,518,810.77
  5. Step 5: Solve for x
    x = 2,217,518,810.77/51,393.55
  6. Step 6: Final answer
    x = 43,147.80

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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.