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Finding the Fourth Proportional to 86,312.60, 129,485.22 and 33,718.76

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Solution

The fourth proportional to 86,312.60, 129,485.22 and 33,718.76 is: 50,584.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,312.60 : 129,485.22 = 33,718.76 : x
  2. Step 2: Convert to fraction form
    86,312.60/129,485.22 = 33,718.76/x
  3. Step 3: Cross multiply
    86,312.60x = 129,485.22 × 33,718.76
  4. Step 4: Simplify right side
    86,312.60x = 4,366,081,056.73
  5. Step 5: Solve for x
    x = 4,366,081,056.73/86,312.60
  6. Step 6: Final answer
    x = 50,584.52

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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.