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Finding the Fourth Proportional to 66,411.72, 91,637.64 and 37,334.34

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Solution

The fourth proportional to 66,411.72, 91,637.64 and 37,334.34 is: 51,515.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,411.72 : 91,637.64 = 37,334.34 : x
  2. Step 2: Convert to fraction form
    66,411.72/91,637.64 = 37,334.34/x
  3. Step 3: Cross multiply
    66,411.72x = 91,637.64 × 37,334.34
  4. Step 4: Simplify right side
    66,411.72x = 3,421,230,808.56
  5. Step 5: Solve for x
    x = 3,421,230,808.56/66,411.72
  6. Step 6: Final answer
    x = 51,515.47

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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.