Home / 42,790.17-64,131.80-20,597.66

Finding the Fourth Proportional to 42,790.17, 64,131.80 and 20,597.66

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Solution

The fourth proportional to 42,790.17, 64,131.80 and 20,597.66 is: 30,870.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,790.17 : 64,131.80 = 20,597.66 : x
  2. Step 2: Convert to fraction form
    42,790.17/64,131.80 = 20,597.66/x
  3. Step 3: Cross multiply
    42,790.17x = 64,131.80 × 20,597.66
  4. Step 4: Simplify right side
    42,790.17x = 1,320,964,587.94
  5. Step 5: Solve for x
    x = 1,320,964,587.94/42,790.17
  6. Step 6: Final answer
    x = 30,870.75

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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.