Home / 48,136.40-72,166.20-20,411.60

Finding the Fourth Proportional to 48,136.40, 72,166.20 and 20,411.60

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Solution

The fourth proportional to 48,136.40, 72,166.20 and 20,411.60 is: 30,601.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,136.40 : 72,166.20 = 20,411.60 : x
  2. Step 2: Convert to fraction form
    48,136.40/72,166.20 = 20,411.60/x
  3. Step 3: Cross multiply
    48,136.40x = 72,166.20 × 20,411.60
  4. Step 4: Simplify right side
    48,136.40x = 1,473,027,607.92
  5. Step 5: Solve for x
    x = 1,473,027,607.92/48,136.40
  6. Step 6: Final answer
    x = 30,601.12

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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.