Home / 56,895.78-78,516.18-31,745.28

Finding the Fourth Proportional to 56,895.78, 78,516.18 and 31,745.28

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Solution

The fourth proportional to 56,895.78, 78,516.18 and 31,745.28 is: 43,808.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,895.78 : 78,516.18 = 31,745.28 : x
  2. Step 2: Convert to fraction form
    56,895.78/78,516.18 = 31,745.28/x
  3. Step 3: Cross multiply
    56,895.78x = 78,516.18 × 31,745.28
  4. Step 4: Simplify right side
    56,895.78x = 2,492,518,118.63
  5. Step 5: Solve for x
    x = 2,492,518,118.63/56,895.78
  6. Step 6: Final answer
    x = 43,808.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.