Home / 56,816.30-78,407-31,323.55

Finding the Fourth Proportional to 56,816.30, 78,407 and 31,323.55

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Solution

The fourth proportional to 56,816.30, 78,407 and 31,323.55 is: 43,226.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,816.30 : 78,407 = 31,323.55 : x
  2. Step 2: Convert to fraction form
    56,816.30/78,407 = 31,323.55/x
  3. Step 3: Cross multiply
    56,816.30x = 78,407 × 31,323.55
  4. Step 4: Simplify right side
    56,816.30x = 2,455,985,584.85
  5. Step 5: Solve for x
    x = 2,455,985,584.85/56,816.30
  6. Step 6: Final answer
    x = 43,226.78

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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.