Home / 55,487.61-83,223.18-20,419.07

Finding the Fourth Proportional to 55,487.61, 83,223.18 and 20,419.07

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Solution

The fourth proportional to 55,487.61, 83,223.18 and 20,419.07 is: 30,625.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,487.61 : 83,223.18 = 20,419.07 : x
  2. Step 2: Convert to fraction form
    55,487.61/83,223.18 = 20,419.07/x
  3. Step 3: Cross multiply
    55,487.61x = 83,223.18 × 20,419.07
  4. Step 4: Simplify right side
    55,487.61x = 1,699,339,521.93
  5. Step 5: Solve for x
    x = 1,699,339,521.93/55,487.61
  6. Step 6: Final answer
    x = 30,625.57

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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.