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Finding the Fourth Proportional to 117,479.61, 162,083.28 and 66,487.29

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Solution

The fourth proportional to 117,479.61, 162,083.28 and 66,487.29 is: 91,730.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,479.61 : 162,083.28 = 66,487.29 : x
  2. Step 2: Convert to fraction form
    117,479.61/162,083.28 = 66,487.29/x
  3. Step 3: Cross multiply
    117,479.61x = 162,083.28 × 66,487.29
  4. Step 4: Simplify right side
    117,479.61x = 10,776,478,041.51
  5. Step 5: Solve for x
    x = 10,776,478,041.51/117,479.61
  6. Step 6: Final answer
    x = 91,730.62

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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.