Home / 76,890.51-115,280.41-47,247.10

Finding the Fourth Proportional to 76,890.51, 115,280.41 and 47,247.10

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Solution

The fourth proportional to 76,890.51, 115,280.41 and 47,247.10 is: 70,836.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,890.51 : 115,280.41 = 47,247.10 : x
  2. Step 2: Convert to fraction form
    76,890.51/115,280.41 = 47,247.10/x
  3. Step 3: Cross multiply
    76,890.51x = 115,280.41 × 47,247.10
  4. Step 4: Simplify right side
    76,890.51x = 5,446,664,941.19
  5. Step 5: Solve for x
    x = 5,446,664,941.19/76,890.51
  6. Step 6: Final answer
    x = 70,836.63

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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.