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Finding the Fourth Proportional to 86,007.60, 118,696.32 and 64,753.20

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Solution

The fourth proportional to 86,007.60, 118,696.32 and 64,753.20 is: 89,363.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,007.60 : 118,696.32 = 64,753.20 : x
  2. Step 2: Convert to fraction form
    86,007.60/118,696.32 = 64,753.20/x
  3. Step 3: Cross multiply
    86,007.60x = 118,696.32 × 64,753.20
  4. Step 4: Simplify right side
    86,007.60x = 7,685,966,548.22
  5. Step 5: Solve for x
    x = 7,685,966,548.22/86,007.60
  6. Step 6: Final answer
    x = 89,363.81

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.