Home / 42,790.50-64,129.19-30,983.76

Finding the Fourth Proportional to 42,790.50, 64,129.19 and 30,983.76

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Solution

The fourth proportional to 42,790.50, 64,129.19 and 30,983.76 is: 46,434.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,790.50 : 64,129.19 = 30,983.76 : x
  2. Step 2: Convert to fraction form
    42,790.50/64,129.19 = 30,983.76/x
  3. Step 3: Cross multiply
    42,790.50x = 64,129.19 × 30,983.76
  4. Step 4: Simplify right side
    42,790.50x = 1,986,963,277.04
  5. Step 5: Solve for x
    x = 1,986,963,277.04/42,790.50
  6. Step 6: Final answer
    x = 46,434.68

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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.