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Finding the Fourth Proportional to 86,667.56, 129,915.22 and 60,316.94

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Solution

The fourth proportional to 86,667.56, 129,915.22 and 60,316.94 is: 90,415.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,667.56 : 129,915.22 = 60,316.94 : x
  2. Step 2: Convert to fraction form
    86,667.56/129,915.22 = 60,316.94/x
  3. Step 3: Cross multiply
    86,667.56x = 129,915.22 × 60,316.94
  4. Step 4: Simplify right side
    86,667.56x = 7,836,088,529.83
  5. Step 5: Solve for x
    x = 7,836,088,529.83/86,667.56
  6. Step 6: Final answer
    x = 90,415.47

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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.