Home / 55,711.68-76,868.64-31,513.08

Finding the Fourth Proportional to 55,711.68, 76,868.64 and 31,513.08

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Solution

The fourth proportional to 55,711.68, 76,868.64 and 31,513.08 is: 43,480.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,711.68 : 76,868.64 = 31,513.08 : x
  2. Step 2: Convert to fraction form
    55,711.68/76,868.64 = 31,513.08/x
  3. Step 3: Cross multiply
    55,711.68x = 76,868.64 × 31,513.08
  4. Step 4: Simplify right side
    55,711.68x = 2,422,367,601.81
  5. Step 5: Solve for x
    x = 2,422,367,601.81/55,711.68
  6. Step 6: Final answer
    x = 43,480.43

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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.