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Finding the Fourth Proportional to 56,580.53, 84,870.91 and 21,049.64

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Solution

The fourth proportional to 56,580.53, 84,870.91 and 21,049.64 is: 31,574.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,580.53 : 84,870.91 = 21,049.64 : x
  2. Step 2: Convert to fraction form
    56,580.53/84,870.91 = 21,049.64/x
  3. Step 3: Cross multiply
    56,580.53x = 84,870.91 × 21,049.64
  4. Step 4: Simplify right side
    56,580.53x = 1,786,502,101.97
  5. Step 5: Solve for x
    x = 1,786,502,101.97/56,580.53
  6. Step 6: Final answer
    x = 31,574.50

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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.