Home / 48,621.80-72,786.90-28,890.20

Finding the Fourth Proportional to 48,621.80, 72,786.90 and 28,890.20

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Solution

The fourth proportional to 48,621.80, 72,786.90 and 28,890.20 is: 43,248.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,621.80 : 72,786.90 = 28,890.20 : x
  2. Step 2: Convert to fraction form
    48,621.80/72,786.90 = 28,890.20/x
  3. Step 3: Cross multiply
    48,621.80x = 72,786.90 × 28,890.20
  4. Step 4: Simplify right side
    48,621.80x = 2,102,828,098.38
  5. Step 5: Solve for x
    x = 2,102,828,098.38/48,621.80
  6. Step 6: Final answer
    x = 43,248.67

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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.