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Finding the Fourth Proportional to 58,144.80, 87,217.20 and 31,901.60

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Solution

The fourth proportional to 58,144.80, 87,217.20 and 31,901.60 is: 47,852.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,144.80 : 87,217.20 = 31,901.60 : x
  2. Step 2: Convert to fraction form
    58,144.80/87,217.20 = 31,901.60/x
  3. Step 3: Cross multiply
    58,144.80x = 87,217.20 × 31,901.60
  4. Step 4: Simplify right side
    58,144.80x = 2,782,368,227.52
  5. Step 5: Solve for x
    x = 2,782,368,227.52/58,144.80
  6. Step 6: Final answer
    x = 47,852.40

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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.