Home / 56,580.64-78,078.16-31,428.52

Finding the Fourth Proportional to 56,580.64, 78,078.16 and 31,428.52

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Solution

The fourth proportional to 56,580.64, 78,078.16 and 31,428.52 is: 43,369.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,580.64 : 78,078.16 = 31,428.52 : x
  2. Step 2: Convert to fraction form
    56,580.64/78,078.16 = 31,428.52/x
  3. Step 3: Cross multiply
    56,580.64x = 78,078.16 × 31,428.52
  4. Step 4: Simplify right side
    56,580.64x = 2,453,881,013.12
  5. Step 5: Solve for x
    x = 2,453,881,013.12/56,580.64
  6. Step 6: Final answer
    x = 43,369.62

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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.