Home / 55,916.21-83,871.58-20,853.13

Finding the Fourth Proportional to 55,916.21, 83,871.58 and 20,853.13

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Solution

The fourth proportional to 55,916.21, 83,871.58 and 20,853.13 is: 31,278.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,916.21 : 83,871.58 = 20,853.13 : x
  2. Step 2: Convert to fraction form
    55,916.21/83,871.58 = 20,853.13/x
  3. Step 3: Cross multiply
    55,916.21x = 83,871.58 × 20,853.13
  4. Step 4: Simplify right side
    55,916.21x = 1,748,985,301.63
  5. Step 5: Solve for x
    x = 1,748,985,301.63/55,916.21
  6. Step 6: Final answer
    x = 31,278.68

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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.