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Finding the Fourth Proportional to 68,417.22, 94,480.98 and 64,689.81

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Solution

The fourth proportional to 68,417.22, 94,480.98 and 64,689.81 is: 89,333.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,417.22 : 94,480.98 = 64,689.81 : x
  2. Step 2: Convert to fraction form
    68,417.22/94,480.98 = 64,689.81/x
  3. Step 3: Cross multiply
    68,417.22x = 94,480.98 × 64,689.81
  4. Step 4: Simplify right side
    68,417.22x = 6,111,956,411.80
  5. Step 5: Solve for x
    x = 6,111,956,411.80/68,417.22
  6. Step 6: Final answer
    x = 89,333.59

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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.