Home / 56,986.62-78,639.03-31,835.58

Finding the Fourth Proportional to 56,986.62, 78,639.03 and 31,835.58

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Solution

The fourth proportional to 56,986.62, 78,639.03 and 31,835.58 is: 43,931.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,986.62 : 78,639.03 = 31,835.58 : x
  2. Step 2: Convert to fraction form
    56,986.62/78,639.03 = 31,835.58/x
  3. Step 3: Cross multiply
    56,986.62x = 78,639.03 × 31,835.58
  4. Step 4: Simplify right side
    56,986.62x = 2,503,519,130.69
  5. Step 5: Solve for x
    x = 2,503,519,130.69/56,986.62
  6. Step 6: Final answer
    x = 43,931.70

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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.