Home / 55,985.46-84,000.06-20,916.90

Finding the Fourth Proportional to 55,985.46, 84,000.06 and 20,916.90

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Solution

The fourth proportional to 55,985.46, 84,000.06 and 20,916.90 is: 31,383.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,985.46 : 84,000.06 = 20,916.90 : x
  2. Step 2: Convert to fraction form
    55,985.46/84,000.06 = 20,916.90/x
  3. Step 3: Cross multiply
    55,985.46x = 84,000.06 × 20,916.90
  4. Step 4: Simplify right side
    55,985.46x = 1,757,020,855.01
  5. Step 5: Solve for x
    x = 1,757,020,855.01/55,985.46
  6. Step 6: Final answer
    x = 31,383.52

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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.