Home / 55,475.08-83,217.90-20,415.40

Finding the Fourth Proportional to 55,475.08, 83,217.90 and 20,415.40

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Solution

The fourth proportional to 55,475.08, 83,217.90 and 20,415.40 is: 30,625.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,475.08 : 83,217.90 = 20,415.40 : x
  2. Step 2: Convert to fraction form
    55,475.08/83,217.90 = 20,415.40/x
  3. Step 3: Cross multiply
    55,475.08x = 83,217.90 × 20,415.40
  4. Step 4: Simplify right side
    55,475.08x = 1,698,926,715.66
  5. Step 5: Solve for x
    x = 1,698,926,715.66/55,475.08
  6. Step 6: Final answer
    x = 30,625.04

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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.