Home / 51,478.13-77,209.83-19,903.05

Finding the Fourth Proportional to 51,478.13, 77,209.83 and 19,903.05

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Solution

The fourth proportional to 51,478.13, 77,209.83 and 19,903.05 is: 29,851.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,478.13 : 77,209.83 = 19,903.05 : x
  2. Step 2: Convert to fraction form
    51,478.13/77,209.83 = 19,903.05/x
  3. Step 3: Cross multiply
    51,478.13x = 77,209.83 × 19,903.05
  4. Step 4: Simplify right side
    51,478.13x = 1,536,711,106.98
  5. Step 5: Solve for x
    x = 1,536,711,106.98/51,478.13
  6. Step 6: Final answer
    x = 29,851.73

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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.