Home / 42,737.27-64,081.13-20,520.32

Finding the Fourth Proportional to 42,737.27, 64,081.13 and 20,520.32

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Solution

The fourth proportional to 42,737.27, 64,081.13 and 20,520.32 is: 30,768.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,737.27 : 64,081.13 = 20,520.32 : x
  2. Step 2: Convert to fraction form
    42,737.27/64,081.13 = 20,520.32/x
  3. Step 3: Cross multiply
    42,737.27x = 64,081.13 × 20,520.32
  4. Step 4: Simplify right side
    42,737.27x = 1,314,964,870.55
  5. Step 5: Solve for x
    x = 1,314,964,870.55/42,737.27
  6. Step 6: Final answer
    x = 30,768.58

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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.