Home / 66,530.16-99,807.39-40,203.54

Finding the Fourth Proportional to 66,530.16, 99,807.39 and 40,203.54

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Solution

The fourth proportional to 66,530.16, 99,807.39 and 40,203.54 is: 60,312.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,530.16 : 99,807.39 = 40,203.54 : x
  2. Step 2: Convert to fraction form
    66,530.16/99,807.39 = 40,203.54/x
  3. Step 3: Cross multiply
    66,530.16x = 99,807.39 × 40,203.54
  4. Step 4: Simplify right side
    66,530.16x = 4,012,610,396.16
  5. Step 5: Solve for x
    x = 4,012,610,396.16/66,530.16
  6. Step 6: Final answer
    x = 60,312.65

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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.