Home / 56,750.64-85,131.72-21,719.76

Finding the Fourth Proportional to 56,750.64, 85,131.72 and 21,719.76

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Solution

The fourth proportional to 56,750.64, 85,131.72 and 21,719.76 is: 32,581.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,750.64 : 85,131.72 = 21,719.76 : x
  2. Step 2: Convert to fraction form
    56,750.64/85,131.72 = 21,719.76/x
  3. Step 3: Cross multiply
    56,750.64x = 85,131.72 × 21,719.76
  4. Step 4: Simplify right side
    56,750.64x = 1,849,040,526.79
  5. Step 5: Solve for x
    x = 1,849,040,526.79/56,750.64
  6. Step 6: Final answer
    x = 32,581.84

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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.