Home / 55,985.16-83,982.18-18,543.72

Finding the Fourth Proportional to 55,985.16, 83,982.18 and 18,543.72

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Solution

The fourth proportional to 55,985.16, 83,982.18 and 18,543.72 is: 27,817.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,985.16 : 83,982.18 = 18,543.72 : x
  2. Step 2: Convert to fraction form
    55,985.16/83,982.18 = 18,543.72/x
  3. Step 3: Cross multiply
    55,985.16x = 83,982.18 × 18,543.72
  4. Step 4: Simplify right side
    55,985.16x = 1,557,342,030.91
  5. Step 5: Solve for x
    x = 1,557,342,030.91/55,985.16
  6. Step 6: Final answer
    x = 27,817.05

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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.