Home / 58,145.40-87,218.10-21,204.60

Finding the Fourth Proportional to 58,145.40, 87,218.10 and 21,204.60

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Solution

The fourth proportional to 58,145.40, 87,218.10 and 21,204.60 is: 31,806.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,145.40 : 87,218.10 = 21,204.60 : x
  2. Step 2: Convert to fraction form
    58,145.40/87,218.10 = 21,204.60/x
  3. Step 3: Cross multiply
    58,145.40x = 87,218.10 × 21,204.60
  4. Step 4: Simplify right side
    58,145.40x = 1,849,424,923.26
  5. Step 5: Solve for x
    x = 1,849,424,923.26/58,145.40
  6. Step 6: Final answer
    x = 31,806.90

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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.