Home / 57,159.74-78,878.98-31,318.11

Finding the Fourth Proportional to 57,159.74, 78,878.98 and 31,318.11

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Solution

The fourth proportional to 57,159.74, 78,878.98 and 31,318.11 is: 43,218.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,159.74 : 78,878.98 = 31,318.11 : x
  2. Step 2: Convert to fraction form
    57,159.74/78,878.98 = 31,318.11/x
  3. Step 3: Cross multiply
    57,159.74x = 78,878.98 × 31,318.11
  4. Step 4: Simplify right side
    57,159.74x = 2,470,340,611.48
  5. Step 5: Solve for x
    x = 2,470,340,611.48/57,159.74
  6. Step 6: Final answer
    x = 43,218.19

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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.