Home / 66,512.20-99,718.70-40,211.40

Finding the Fourth Proportional to 66,512.20, 99,718.70 and 40,211.40

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Solution

The fourth proportional to 66,512.20, 99,718.70 and 40,211.40 is: 60,287.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,512.20 : 99,718.70 = 40,211.40 : x
  2. Step 2: Convert to fraction form
    66,512.20/99,718.70 = 40,211.40/x
  3. Step 3: Cross multiply
    66,512.20x = 99,718.70 × 40,211.40
  4. Step 4: Simplify right side
    66,512.20x = 4,009,828,533.18
  5. Step 5: Solve for x
    x = 4,009,828,533.18/66,512.20
  6. Step 6: Final answer
    x = 60,287.11

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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.