Home / 47,992.80-72,021.60-31,312.20

Finding the Fourth Proportional to 47,992.80, 72,021.60 and 31,312.20

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Solution

The fourth proportional to 47,992.80, 72,021.60 and 31,312.20 is: 46,989.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,992.80 : 72,021.60 = 31,312.20 : x
  2. Step 2: Convert to fraction form
    47,992.80/72,021.60 = 31,312.20/x
  3. Step 3: Cross multiply
    47,992.80x = 72,021.60 × 31,312.20
  4. Step 4: Simplify right side
    47,992.80x = 2,255,154,743.52
  5. Step 5: Solve for x
    x = 2,255,154,743.52/47,992.80
  6. Step 6: Final answer
    x = 46,989.44

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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.