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Finding the Fourth Proportional to 65,858.00, 90,884.70 and 40,009.07

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Solution

The fourth proportional to 65,858.00, 90,884.70 and 40,009.07 is: 55,212.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,858.00 : 90,884.70 = 40,009.07 : x
  2. Step 2: Convert to fraction form
    65,858.00/90,884.70 = 40,009.07/x
  3. Step 3: Cross multiply
    65,858.00x = 90,884.70 × 40,009.07
  4. Step 4: Simplify right side
    65,858.00x = 3,636,212,551.44
  5. Step 5: Solve for x
    x = 3,636,212,551.44/65,858.00
  6. Step 6: Final answer
    x = 55,212.93

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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.