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Finding the Fourth Proportional to 66,283.79, 91,477.71 and 37,612.80

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Solution

The fourth proportional to 66,283.79, 91,477.71 and 37,612.80 is: 51,909.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,283.79 : 91,477.71 = 37,612.80 : x
  2. Step 2: Convert to fraction form
    66,283.79/91,477.71 = 37,612.80/x
  3. Step 3: Cross multiply
    66,283.79x = 91,477.71 × 37,612.80
  4. Step 4: Simplify right side
    66,283.79x = 3,440,732,810.69
  5. Step 5: Solve for x
    x = 3,440,732,810.69/66,283.79
  6. Step 6: Final answer
    x = 51,909.12

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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.