Home / 55,157.40-76,130.76-31,298.04

Finding the Fourth Proportional to 55,157.40, 76,130.76 and 31,298.04

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Solution

The fourth proportional to 55,157.40, 76,130.76 and 31,298.04 is: 43,198.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,157.40 : 76,130.76 = 31,298.04 : x
  2. Step 2: Convert to fraction form
    55,157.40/76,130.76 = 31,298.04/x
  3. Step 3: Cross multiply
    55,157.40x = 76,130.76 × 31,298.04
  4. Step 4: Simplify right side
    55,157.40x = 2,382,743,571.71
  5. Step 5: Solve for x
    x = 2,382,743,571.71/55,157.40
  6. Step 6: Final answer
    x = 43,198.98

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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.