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Finding the Fourth Proportional to 66,355.50, 91,570.60 and 36,547.50

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Solution

The fourth proportional to 66,355.50, 91,570.60 and 36,547.50 is: 50,435.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,355.50 : 91,570.60 = 36,547.50 : x
  2. Step 2: Convert to fraction form
    66,355.50/91,570.60 = 36,547.50/x
  3. Step 3: Cross multiply
    66,355.50x = 91,570.60 × 36,547.50
  4. Step 4: Simplify right side
    66,355.50x = 3,346,676,503.50
  5. Step 5: Solve for x
    x = 3,346,676,503.50/66,355.50
  6. Step 6: Final answer
    x = 50,435.56

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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.