Home / 56,812.52-78,400.86-31,318.04

Finding the Fourth Proportional to 56,812.52, 78,400.86 and 31,318.04

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Solution

The fourth proportional to 56,812.52, 78,400.86 and 31,318.04 is: 43,218.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,812.52 : 78,400.86 = 31,318.04 : x
  2. Step 2: Convert to fraction form
    56,812.52/78,400.86 = 31,318.04/x
  3. Step 3: Cross multiply
    56,812.52x = 78,400.86 × 31,318.04
  4. Step 4: Simplify right side
    56,812.52x = 2,455,361,269.51
  5. Step 5: Solve for x
    x = 2,455,361,269.51/56,812.52
  6. Step 6: Final answer
    x = 43,218.66

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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.