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Finding the Fourth Proportional to 51,084.51, 70,491.11 and 28,419.90

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Solution

The fourth proportional to 51,084.51, 70,491.11 and 28,419.90 is: 39,216.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,084.51 : 70,491.11 = 28,419.90 : x
  2. Step 2: Convert to fraction form
    51,084.51/70,491.11 = 28,419.90/x
  3. Step 3: Cross multiply
    51,084.51x = 70,491.11 × 28,419.90
  4. Step 4: Simplify right side
    51,084.51x = 2,003,350,154.99
  5. Step 5: Solve for x
    x = 2,003,350,154.99/51,084.51
  6. Step 6: Final answer
    x = 39,216.39

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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.