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Finding the Fourth Proportional to 66,510.83, 91,760.92 and 51,202.06

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Solution

The fourth proportional to 66,510.83, 91,760.92 and 51,202.06 is: 70,640.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,510.83 : 91,760.92 = 51,202.06 : x
  2. Step 2: Convert to fraction form
    66,510.83/91,760.92 = 51,202.06/x
  3. Step 3: Cross multiply
    66,510.83x = 91,760.92 × 51,202.06
  4. Step 4: Simplify right side
    66,510.83x = 4,698,348,131.50
  5. Step 5: Solve for x
    x = 4,698,348,131.50/66,510.83
  6. Step 6: Final answer
    x = 70,640.35

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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.