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Finding the Fourth Proportional to 66,279.44, 91,468.83 and 37,985.19

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Solution

The fourth proportional to 66,279.44, 91,468.83 and 37,985.19 is: 52,421.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,279.44 : 91,468.83 = 37,985.19 : x
  2. Step 2: Convert to fraction form
    66,279.44/91,468.83 = 37,985.19/x
  3. Step 3: Cross multiply
    66,279.44x = 91,468.83 × 37,985.19
  4. Step 4: Simplify right side
    66,279.44x = 3,474,460,886.63
  5. Step 5: Solve for x
    x = 3,474,460,886.63/66,279.44
  6. Step 6: Final answer
    x = 52,421.40

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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.