Home / 57,039.76-78,715.39-31,544.81

Finding the Fourth Proportional to 57,039.76, 78,715.39 and 31,544.81

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Solution

The fourth proportional to 57,039.76, 78,715.39 and 31,544.81 is: 43,532.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,039.76 : 78,715.39 = 31,544.81 : x
  2. Step 2: Convert to fraction form
    57,039.76/78,715.39 = 31,544.81/x
  3. Step 3: Cross multiply
    57,039.76x = 78,715.39 × 31,544.81
  4. Step 4: Simplify right side
    57,039.76x = 2,483,062,021.63
  5. Step 5: Solve for x
    x = 2,483,062,021.63/57,039.76
  6. Step 6: Final answer
    x = 43,532.13

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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.