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Finding the Fourth Proportional to 66,418.60, 99,627.90 and 35,314.60

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Solution

The fourth proportional to 66,418.60, 99,627.90 and 35,314.60 is: 52,971.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,418.60 : 99,627.90 = 35,314.60 : x
  2. Step 2: Convert to fraction form
    66,418.60/99,627.90 = 35,314.60/x
  3. Step 3: Cross multiply
    66,418.60x = 99,627.90 × 35,314.60
  4. Step 4: Simplify right side
    66,418.60x = 3,518,319,437.34
  5. Step 5: Solve for x
    x = 3,518,319,437.34/66,418.60
  6. Step 6: Final answer
    x = 52,971.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.