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Finding the Fourth Proportional to 66,710.02, 100,065.02 and 31,630.54

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Solution

The fourth proportional to 66,710.02, 100,065.02 and 31,630.54 is: 47,445.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,710.02 : 100,065.02 = 31,630.54 : x
  2. Step 2: Convert to fraction form
    66,710.02/100,065.02 = 31,630.54/x
  3. Step 3: Cross multiply
    66,710.02x = 100,065.02 × 31,630.54
  4. Step 4: Simplify right side
    66,710.02x = 3,165,110,617.71
  5. Step 5: Solve for x
    x = 3,165,110,617.71/66,710.02
  6. Step 6: Final answer
    x = 47,445.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.