Home / 55,020.40-75,928.38-31,151.68

Finding the Fourth Proportional to 55,020.40, 75,928.38 and 31,151.68

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Solution

The fourth proportional to 55,020.40, 75,928.38 and 31,151.68 is: 42,989.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,020.40 : 75,928.38 = 31,151.68 : x
  2. Step 2: Convert to fraction form
    55,020.40/75,928.38 = 31,151.68/x
  3. Step 3: Cross multiply
    55,020.40x = 75,928.38 × 31,151.68
  4. Step 4: Simplify right side
    55,020.40x = 2,365,296,596.68
  5. Step 5: Solve for x
    x = 2,365,296,596.68/55,020.40
  6. Step 6: Final answer
    x = 42,989.45

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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.