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Finding the Fourth Proportional to 66,090.93, 91,202.79 and 35,875.09

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Solution

The fourth proportional to 66,090.93, 91,202.79 and 35,875.09 is: 49,506.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,090.93 : 91,202.79 = 35,875.09 : x
  2. Step 2: Convert to fraction form
    66,090.93/91,202.79 = 35,875.09/x
  3. Step 3: Cross multiply
    66,090.93x = 91,202.79 × 35,875.09
  4. Step 4: Simplify right side
    66,090.93x = 3,271,908,299.50
  5. Step 5: Solve for x
    x = 3,271,908,299.50/66,090.93
  6. Step 6: Final answer
    x = 49,506.16

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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.