Home / 85,543.08-128,312.46-23,211.96

Finding the Fourth Proportional to 85,543.08, 128,312.46 and 23,211.96

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Solution

The fourth proportional to 85,543.08, 128,312.46 and 23,211.96 is: 34,817.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,543.08 : 128,312.46 = 23,211.96 : x
  2. Step 2: Convert to fraction form
    85,543.08/128,312.46 = 23,211.96/x
  3. Step 3: Cross multiply
    85,543.08x = 128,312.46 × 23,211.96
  4. Step 4: Simplify right side
    85,543.08x = 2,978,383,689.02
  5. Step 5: Solve for x
    x = 2,978,383,689.02/85,543.08
  6. Step 6: Final answer
    x = 34,817.35

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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.