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Finding the Fourth Proportional to 64,846.04, 89,498.94 and 61,891.16

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Solution

The fourth proportional to 64,846.04, 89,498.94 and 61,891.16 is: 85,420.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,846.04 : 89,498.94 = 61,891.16 : x
  2. Step 2: Convert to fraction form
    64,846.04/89,498.94 = 61,891.16/x
  3. Step 3: Cross multiply
    64,846.04x = 89,498.94 × 61,891.16
  4. Step 4: Simplify right side
    64,846.04x = 5,539,193,215.37
  5. Step 5: Solve for x
    x = 5,539,193,215.37/64,846.04
  6. Step 6: Final answer
    x = 85,420.69

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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.