Home / 42,778.55-64,114.36-20,585.96

Finding the Fourth Proportional to 42,778.55, 64,114.36 and 20,585.96

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Solution

The fourth proportional to 42,778.55, 64,114.36 and 20,585.96 is: 30,853.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,778.55 : 64,114.36 = 20,585.96 : x
  2. Step 2: Convert to fraction form
    42,778.55/64,114.36 = 20,585.96/x
  3. Step 3: Cross multiply
    42,778.55x = 64,114.36 × 20,585.96
  4. Step 4: Simplify right side
    42,778.55x = 1,319,855,759.21
  5. Step 5: Solve for x
    x = 1,319,855,759.21/42,778.55
  6. Step 6: Final answer
    x = 30,853.22

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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.