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Finding the Fourth Proportional to 57,360.31, 79,159.86 and 31,866.70

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Solution

The fourth proportional to 57,360.31, 79,159.86 and 31,866.70 is: 43,977.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,360.31 : 79,159.86 = 31,866.70 : x
  2. Step 2: Convert to fraction form
    57,360.31/79,159.86 = 31,866.70/x
  3. Step 3: Cross multiply
    57,360.31x = 79,159.86 × 31,866.70
  4. Step 4: Simplify right side
    57,360.31x = 2,522,563,510.66
  5. Step 5: Solve for x
    x = 2,522,563,510.66/57,360.31
  6. Step 6: Final answer
    x = 43,977.51

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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.