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Finding the Fourth Proportional to 45,642, 62,987.36 and 25,499.76

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Solution

The fourth proportional to 45,642, 62,987.36 and 25,499.76 is: 35,190.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,642 : 62,987.36 = 25,499.76 : x
  2. Step 2: Convert to fraction form
    45,642/62,987.36 = 25,499.76/x
  3. Step 3: Cross multiply
    45,642x = 62,987.36 × 25,499.76
  4. Step 4: Simplify right side
    45,642x = 1,606,162,563.03
  5. Step 5: Solve for x
    x = 1,606,162,563.03/45,642
  6. Step 6: Final answer
    x = 35,190.45

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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.