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Finding the Fourth Proportional to 86,639, 119,562.18 and 46,895

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Solution

The fourth proportional to 86,639, 119,562.18 and 46,895 is: 64,715.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,639 : 119,562.18 = 46,895 : x
  2. Step 2: Convert to fraction form
    86,639/119,562.18 = 46,895/x
  3. Step 3: Cross multiply
    86,639x = 119,562.18 × 46,895
  4. Step 4: Simplify right side
    86,639x = 5,606,868,431.10
  5. Step 5: Solve for x
    x = 5,606,868,431.10/86,639
  6. Step 6: Final answer
    x = 64,715.29

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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.