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Finding the Fourth Proportional to 86,033.46, 128,842.54 and 51,740.62

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Solution

The fourth proportional to 86,033.46, 128,842.54 and 51,740.62 is: 77,486.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,033.46 : 128,842.54 = 51,740.62 : x
  2. Step 2: Convert to fraction form
    86,033.46/128,842.54 = 51,740.62/x
  3. Step 3: Cross multiply
    86,033.46x = 128,842.54 × 51,740.62
  4. Step 4: Simplify right side
    86,033.46x = 6,666,392,901.97
  5. Step 5: Solve for x
    x = 6,666,392,901.97/86,033.46
  6. Step 6: Final answer
    x = 77,486.05

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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.