Home / 66,128.44-99,156.21-34,459.47

Finding the Fourth Proportional to 66,128.44, 99,156.21 and 34,459.47

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Solution

The fourth proportional to 66,128.44, 99,156.21 and 34,459.47 is: 51,670.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,128.44 : 99,156.21 = 34,459.47 : x
  2. Step 2: Convert to fraction form
    66,128.44/99,156.21 = 34,459.47/x
  3. Step 3: Cross multiply
    66,128.44x = 99,156.21 × 34,459.47
  4. Step 4: Simplify right side
    66,128.44x = 3,416,870,443.81
  5. Step 5: Solve for x
    x = 3,416,870,443.81/66,128.44
  6. Step 6: Final answer
    x = 51,670.21

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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.