Home / 56,486.31-78,032.22-45,140.94

Finding the Fourth Proportional to 56,486.31, 78,032.22 and 45,140.94

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Solution

The fourth proportional to 56,486.31, 78,032.22 and 45,140.94 is: 62,359.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,486.31 : 78,032.22 = 45,140.94 : x
  2. Step 2: Convert to fraction form
    56,486.31/78,032.22 = 45,140.94/x
  3. Step 3: Cross multiply
    56,486.31x = 78,032.22 × 45,140.94
  4. Step 4: Simplify right side
    56,486.31x = 3,522,447,761.09
  5. Step 5: Solve for x
    x = 3,522,447,761.09/56,486.31
  6. Step 6: Final answer
    x = 62,359.32

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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.