Home / 81,807.15-122,636.91-56,858.95

Finding the Fourth Proportional to 81,807.15, 122,636.91 and 56,858.95

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Solution

The fourth proportional to 81,807.15, 122,636.91 and 56,858.95 is: 85,237.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,807.15 : 122,636.91 = 56,858.95 : x
  2. Step 2: Convert to fraction form
    81,807.15/122,636.91 = 56,858.95/x
  3. Step 3: Cross multiply
    81,807.15x = 122,636.91 × 56,858.95
  4. Step 4: Simplify right side
    81,807.15x = 6,973,005,627.25
  5. Step 5: Solve for x
    x = 6,973,005,627.25/81,807.15
  6. Step 6: Final answer
    x = 85,237.12

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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.