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Finding the Fourth Proportional to 66,259.35, 91,440.09 and 37,970.46

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Solution

The fourth proportional to 66,259.35, 91,440.09 and 37,970.46 is: 52,400.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,259.35 : 91,440.09 = 37,970.46 : x
  2. Step 2: Convert to fraction form
    66,259.35/91,440.09 = 37,970.46/x
  3. Step 3: Cross multiply
    66,259.35x = 91,440.09 × 37,970.46
  4. Step 4: Simplify right side
    66,259.35x = 3,472,022,279.74
  5. Step 5: Solve for x
    x = 3,472,022,279.74/66,259.35
  6. Step 6: Final answer
    x = 52,400.49

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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.