Home / 42,790.54-64,158.48-20,559.70

Finding the Fourth Proportional to 42,790.54, 64,158.48 and 20,559.70

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Solution

The fourth proportional to 42,790.54, 64,158.48 and 20,559.70 is: 30,826.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,790.54 : 64,158.48 = 20,559.70 : x
  2. Step 2: Convert to fraction form
    42,790.54/64,158.48 = 20,559.70/x
  3. Step 3: Cross multiply
    42,790.54x = 64,158.48 × 20,559.70
  4. Step 4: Simplify right side
    42,790.54x = 1,319,079,101.26
  5. Step 5: Solve for x
    x = 1,319,079,101.26/42,790.54
  6. Step 6: Final answer
    x = 30,826.42

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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.