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Finding the Fourth Proportional to 64,422.36, 88,809.48 and 45,243.72

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Solution

The fourth proportional to 64,422.36, 88,809.48 and 45,243.72 is: 62,370.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,422.36 : 88,809.48 = 45,243.72 : x
  2. Step 2: Convert to fraction form
    64,422.36/88,809.48 = 45,243.72/x
  3. Step 3: Cross multiply
    64,422.36x = 88,809.48 × 45,243.72
  4. Step 4: Simplify right side
    64,422.36x = 4,018,071,246.47
  5. Step 5: Solve for x
    x = 4,018,071,246.47/64,422.36
  6. Step 6: Final answer
    x = 62,370.76

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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.