Home / 86,143.29-128,938.47-46,062.17

Finding the Fourth Proportional to 86,143.29, 128,938.47 and 46,062.17

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Solution

The fourth proportional to 86,143.29, 128,938.47 and 46,062.17 is: 68,945.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,143.29 : 128,938.47 = 46,062.17 : x
  2. Step 2: Convert to fraction form
    86,143.29/128,938.47 = 46,062.17/x
  3. Step 3: Cross multiply
    86,143.29x = 128,938.47 × 46,062.17
  4. Step 4: Simplify right side
    86,143.29x = 5,939,185,079.99
  5. Step 5: Solve for x
    x = 5,939,185,079.99/86,143.29
  6. Step 6: Final answer
    x = 68,945.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.