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Finding the Fourth Proportional to 64,973.04, 89,615.40 and 49,694.10

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Solution

The fourth proportional to 64,973.04, 89,615.40 and 49,694.10 is: 68,541.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,973.04 : 89,615.40 = 49,694.10 : x
  2. Step 2: Convert to fraction form
    64,973.04/89,615.40 = 49,694.10/x
  3. Step 3: Cross multiply
    64,973.04x = 89,615.40 × 49,694.10
  4. Step 4: Simplify right side
    64,973.04x = 4,453,356,649.14
  5. Step 5: Solve for x
    x = 4,453,356,649.14/64,973.04
  6. Step 6: Final answer
    x = 68,541.61

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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.