Home / 47,855.64-71,778-12,798.04

Finding the Fourth Proportional to 47,855.64, 71,778 and 12,798.04

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Solution

The fourth proportional to 47,855.64, 71,778 and 12,798.04 is: 19,195.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,855.64 : 71,778 = 12,798.04 : x
  2. Step 2: Convert to fraction form
    47,855.64/71,778 = 12,798.04/x
  3. Step 3: Cross multiply
    47,855.64x = 71,778 × 12,798.04
  4. Step 4: Simplify right side
    47,855.64x = 918,617,715.12
  5. Step 5: Solve for x
    x = 918,617,715.12/47,855.64
  6. Step 6: Final answer
    x = 19,195.60

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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.