Home / 55,916.40-83,871.88-20,853.36

Finding the Fourth Proportional to 55,916.40, 83,871.88 and 20,853.36

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Solution

The fourth proportional to 55,916.40, 83,871.88 and 20,853.36 is: 31,279.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,916.40 : 83,871.88 = 20,853.36 : x
  2. Step 2: Convert to fraction form
    55,916.40/83,871.88 = 20,853.36/x
  3. Step 3: Cross multiply
    55,916.40x = 83,871.88 × 20,853.36
  4. Step 4: Simplify right side
    55,916.40x = 1,749,010,507.52
  5. Step 5: Solve for x
    x = 1,749,010,507.52/55,916.40
  6. Step 6: Final answer
    x = 31,279.03

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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.