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Finding the Fourth Proportional to 86,149.48, 128,947.56 and 46,068.13

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Solution

The fourth proportional to 86,149.48, 128,947.56 and 46,068.13 is: 68,954.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,149.48 : 128,947.56 = 46,068.13 : x
  2. Step 2: Convert to fraction form
    86,149.48/128,947.56 = 46,068.13/x
  3. Step 3: Cross multiply
    86,149.48x = 128,947.56 × 46,068.13
  4. Step 4: Simplify right side
    86,149.48x = 5,940,372,957.26
  5. Step 5: Solve for x
    x = 5,940,372,957.26/86,149.48
  6. Step 6: Final answer
    x = 68,954.25

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1.5x scale

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.