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Finding the Fourth Proportional to 56,450.61, 77,905.31 and 31,300.11

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Solution

The fourth proportional to 56,450.61, 77,905.31 and 31,300.11 is: 43,196.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,450.61 : 77,905.31 = 31,300.11 : x
  2. Step 2: Convert to fraction form
    56,450.61/77,905.31 = 31,300.11/x
  3. Step 3: Cross multiply
    56,450.61x = 77,905.31 × 31,300.11
  4. Step 4: Simplify right side
    56,450.61x = 2,438,444,616.08
  5. Step 5: Solve for x
    x = 2,438,444,616.08/56,450.61
  6. Step 6: Final answer
    x = 43,196.07

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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.