Home / 66,076.48-91,155.76-39,220.12

Finding the Fourth Proportional to 66,076.48, 91,155.76 and 39,220.12

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Solution

The fourth proportional to 66,076.48, 91,155.76 and 39,220.12 is: 54,106.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,076.48 : 91,155.76 = 39,220.12 : x
  2. Step 2: Convert to fraction form
    66,076.48/91,155.76 = 39,220.12/x
  3. Step 3: Cross multiply
    66,076.48x = 91,155.76 × 39,220.12
  4. Step 4: Simplify right side
    66,076.48x = 3,575,139,845.89
  5. Step 5: Solve for x
    x = 3,575,139,845.89/66,076.48
  6. Step 6: Final answer
    x = 54,106.09

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1.5x scale

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.