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Finding the Fourth Proportional to 86,112.61, 129,168.96 and 46,918.83

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Solution

The fourth proportional to 86,112.61, 129,168.96 and 46,918.83 is: 70,378.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,112.61 : 129,168.96 = 46,918.83 : x
  2. Step 2: Convert to fraction form
    86,112.61/129,168.96 = 46,918.83/x
  3. Step 3: Cross multiply
    86,112.61x = 129,168.96 × 46,918.83
  4. Step 4: Simplify right side
    86,112.61x = 6,060,456,475.52
  5. Step 5: Solve for x
    x = 6,060,456,475.52/86,112.61
  6. Step 6: Final answer
    x = 70,378.27

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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.