Home / 58,307.64-87,439.96-20,857.56

Finding the Fourth Proportional to 58,307.64, 87,439.96 and 20,857.56

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Solution

The fourth proportional to 58,307.64, 87,439.96 and 20,857.56 is: 31,278.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,307.64 : 87,439.96 = 20,857.56 : x
  2. Step 2: Convert to fraction form
    58,307.64/87,439.96 = 20,857.56/x
  3. Step 3: Cross multiply
    58,307.64x = 87,439.96 × 20,857.56
  4. Step 4: Simplify right side
    58,307.64x = 1,823,784,212.10
  5. Step 5: Solve for x
    x = 1,823,784,212.10/58,307.64
  6. Step 6: Final answer
    x = 31,278.65

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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.