Home / 85,922.05-128,831.31-38,528.57

Finding the Fourth Proportional to 85,922.05, 128,831.31 and 38,528.57

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Solution

The fourth proportional to 85,922.05, 128,831.31 and 38,528.57 is: 57,769.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,922.05 : 128,831.31 = 38,528.57 : x
  2. Step 2: Convert to fraction form
    85,922.05/128,831.31 = 38,528.57/x
  3. Step 3: Cross multiply
    85,922.05x = 128,831.31 × 38,528.57
  4. Step 4: Simplify right side
    85,922.05x = 4,963,686,145.53
  5. Step 5: Solve for x
    x = 4,963,686,145.53/85,922.05
  6. Step 6: Final answer
    x = 57,769.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.