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Finding the Fourth Proportional to 51,900.80, 77,851.20 and 51,463.40

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Solution

The fourth proportional to 51,900.80, 77,851.20 and 51,463.40 is: 77,195.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,900.80 : 77,851.20 = 51,463.40 : x
  2. Step 2: Convert to fraction form
    51,900.80/77,851.20 = 51,463.40/x
  3. Step 3: Cross multiply
    51,900.80x = 77,851.20 × 51,463.40
  4. Step 4: Simplify right side
    51,900.80x = 4,006,487,446.08
  5. Step 5: Solve for x
    x = 4,006,487,446.08/51,900.80
  6. Step 6: Final answer
    x = 77,195.10

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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.