Home / 56,316.30-84,447.12-21,258.72

Finding the Fourth Proportional to 56,316.30, 84,447.12 and 21,258.72

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Solution

The fourth proportional to 56,316.30, 84,447.12 and 21,258.72 is: 31,877.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,316.30 : 84,447.12 = 21,258.72 : x
  2. Step 2: Convert to fraction form
    56,316.30/84,447.12 = 21,258.72/x
  3. Step 3: Cross multiply
    56,316.30x = 84,447.12 × 21,258.72
  4. Step 4: Simplify right side
    56,316.30x = 1,795,237,678.89
  5. Step 5: Solve for x
    x = 1,795,237,678.89/56,316.30
  6. Step 6: Final answer
    x = 31,877.76

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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.