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Finding the Fourth Proportional to 66,457.40, 91,713.50 and 37,778.25

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Solution

The fourth proportional to 66,457.40, 91,713.50 and 37,778.25 is: 52,135.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,457.40 : 91,713.50 = 37,778.25 : x
  2. Step 2: Convert to fraction form
    66,457.40/91,713.50 = 37,778.25/x
  3. Step 3: Cross multiply
    66,457.40x = 91,713.50 × 37,778.25
  4. Step 4: Simplify right side
    66,457.40x = 3,464,775,342.48
  5. Step 5: Solve for x
    x = 3,464,775,342.48/66,457.40
  6. Step 6: Final answer
    x = 52,135.29

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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.