Home / 42,445.27-63,681.69-20,255.77

Finding the Fourth Proportional to 42,445.27, 63,681.69 and 20,255.77

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Solution

The fourth proportional to 42,445.27, 63,681.69 and 20,255.77 is: 30,390.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,445.27 : 63,681.69 = 20,255.77 : x
  2. Step 2: Convert to fraction form
    42,445.27/63,681.69 = 20,255.77/x
  3. Step 3: Cross multiply
    42,445.27x = 63,681.69 × 20,255.77
  4. Step 4: Simplify right side
    42,445.27x = 1,289,921,665.85
  5. Step 5: Solve for x
    x = 1,289,921,665.85/42,445.27
  6. Step 6: Final answer
    x = 30,390.23

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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.