Home / 85,575.16-128,425.80-40,596.66

Finding the Fourth Proportional to 85,575.16, 128,425.80 and 40,596.66

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Solution

The fourth proportional to 85,575.16, 128,425.80 and 40,596.66 is: 60,924.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,575.16 : 128,425.80 = 40,596.66 : x
  2. Step 2: Convert to fraction form
    85,575.16/128,425.80 = 40,596.66/x
  3. Step 3: Cross multiply
    85,575.16x = 128,425.80 × 40,596.66
  4. Step 4: Simplify right side
    85,575.16x = 5,213,658,537.83
  5. Step 5: Solve for x
    x = 5,213,658,537.83/85,575.16
  6. Step 6: Final answer
    x = 60,924.91

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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.