Home / 85,795.15-128,712.98-29,635.72

Finding the Fourth Proportional to 85,795.15, 128,712.98 and 29,635.72

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Solution

The fourth proportional to 85,795.15, 128,712.98 and 29,635.72 is: 44,460.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,795.15 : 128,712.98 = 29,635.72 : x
  2. Step 2: Convert to fraction form
    85,795.15/128,712.98 = 29,635.72/x
  3. Step 3: Cross multiply
    85,795.15x = 128,712.98 × 29,635.72
  4. Step 4: Simplify right side
    85,795.15x = 3,814,501,835.65
  5. Step 5: Solve for x
    x = 3,814,501,835.65/85,795.15
  6. Step 6: Final answer
    x = 44,460.58

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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.