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Finding the Fourth Proportional to 86,489.81, 119,355.89 and 46,745.81

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Solution

The fourth proportional to 86,489.81, 119,355.89 and 46,745.81 is: 64,509.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,489.81 : 119,355.89 = 46,745.81 : x
  2. Step 2: Convert to fraction form
    86,489.81/119,355.89 = 46,745.81/x
  3. Step 3: Cross multiply
    86,489.81x = 119,355.89 × 46,745.81
  4. Step 4: Simplify right side
    86,489.81x = 5,579,387,522.59
  5. Step 5: Solve for x
    x = 5,579,387,522.59/86,489.81
  6. Step 6: Final answer
    x = 64,509.19

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1.5x scale

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.