Home / 56,933.60-78,569-31,439.93

Finding the Fourth Proportional to 56,933.60, 78,569 and 31,439.93

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Solution

The fourth proportional to 56,933.60, 78,569 and 31,439.93 is: 43,387.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,933.60 : 78,569 = 31,439.93 : x
  2. Step 2: Convert to fraction form
    56,933.60/78,569 = 31,439.93/x
  3. Step 3: Cross multiply
    56,933.60x = 78,569 × 31,439.93
  4. Step 4: Simplify right side
    56,933.60x = 2,470,203,860.17
  5. Step 5: Solve for x
    x = 2,470,203,860.17/56,933.60
  6. Step 6: Final answer
    x = 43,387.45

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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.