Home / 66,140.35-91,220.87-43,502.58

Finding the Fourth Proportional to 66,140.35, 91,220.87 and 43,502.58

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Solution

The fourth proportional to 66,140.35, 91,220.87 and 43,502.58 is: 59,998.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,140.35 : 91,220.87 = 43,502.58 : x
  2. Step 2: Convert to fraction form
    66,140.35/91,220.87 = 43,502.58/x
  3. Step 3: Cross multiply
    66,140.35x = 91,220.87 × 43,502.58
  4. Step 4: Simplify right side
    66,140.35x = 3,968,343,303.60
  5. Step 5: Solve for x
    x = 3,968,343,303.60/66,140.35
  6. Step 6: Final answer
    x = 59,998.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.