Home / 55,261.55-76,262.69-31,386.80

Finding the Fourth Proportional to 55,261.55, 76,262.69 and 31,386.80

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Solution

The fourth proportional to 55,261.55, 76,262.69 and 31,386.80 is: 43,314.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,261.55 : 76,262.69 = 31,386.80 : x
  2. Step 2: Convert to fraction form
    55,261.55/76,262.69 = 31,386.80/x
  3. Step 3: Cross multiply
    55,261.55x = 76,262.69 × 31,386.80
  4. Step 4: Simplify right side
    55,261.55x = 2,393,641,832.21
  5. Step 5: Solve for x
    x = 2,393,641,832.21/55,261.55
  6. Step 6: Final answer
    x = 43,314.78

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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.