Home / 85,913.19-128,702.15-56,241.06

Finding the Fourth Proportional to 85,913.19, 128,702.15 and 56,241.06

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Solution

The fourth proportional to 85,913.19, 128,702.15 and 56,241.06 is: 84,251.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,913.19 : 128,702.15 = 56,241.06 : x
  2. Step 2: Convert to fraction form
    85,913.19/128,702.15 = 56,241.06/x
  3. Step 3: Cross multiply
    85,913.19x = 128,702.15 × 56,241.06
  4. Step 4: Simplify right side
    85,913.19x = 7,238,345,340.28
  5. Step 5: Solve for x
    x = 7,238,345,340.28/85,913.19
  6. Step 6: Final answer
    x = 84,251.85

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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.