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Finding the Fourth Proportional to 66,509.74, 91,780.58 and 36,294.32

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Solution

The fourth proportional to 66,509.74, 91,780.58 and 36,294.32 is: 50,084.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,509.74 : 91,780.58 = 36,294.32 : x
  2. Step 2: Convert to fraction form
    66,509.74/91,780.58 = 36,294.32/x
  3. Step 3: Cross multiply
    66,509.74x = 91,780.58 × 36,294.32
  4. Step 4: Simplify right side
    66,509.74x = 3,331,113,740.31
  5. Step 5: Solve for x
    x = 3,331,113,740.31/66,509.74
  6. Step 6: Final answer
    x = 50,084.60

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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.