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Finding the Fourth Proportional to 66,130.98, 91,269.12 and 40,984.26

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Solution

The fourth proportional to 66,130.98, 91,269.12 and 40,984.26 is: 56,563.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,130.98 : 91,269.12 = 40,984.26 : x
  2. Step 2: Convert to fraction form
    66,130.98/91,269.12 = 40,984.26/x
  3. Step 3: Cross multiply
    66,130.98x = 91,269.12 × 40,984.26
  4. Step 4: Simplify right side
    66,130.98x = 3,740,597,344.05
  5. Step 5: Solve for x
    x = 3,740,597,344.05/66,130.98
  6. Step 6: Final answer
    x = 56,563.46

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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.