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Finding the Fourth Proportional to 51,409.62, 70,915.70 and 30,184.79

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Solution

The fourth proportional to 51,409.62, 70,915.70 and 30,184.79 is: 41,637.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,409.62 : 70,915.70 = 30,184.79 : x
  2. Step 2: Convert to fraction form
    51,409.62/70,915.70 = 30,184.79/x
  3. Step 3: Cross multiply
    51,409.62x = 70,915.70 × 30,184.79
  4. Step 4: Simplify right side
    51,409.62x = 2,140,575,233.09
  5. Step 5: Solve for x
    x = 2,140,575,233.09/51,409.62
  6. Step 6: Final answer
    x = 41,637.64

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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.