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Finding the Fourth Proportional to 76,880.72, 115,347 and 76,362.32

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Solution

The fourth proportional to 76,880.72, 115,347 and 76,362.32 is: 114,569.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,880.72 : 115,347 = 76,362.32 : x
  2. Step 2: Convert to fraction form
    76,880.72/115,347 = 76,362.32/x
  3. Step 3: Cross multiply
    76,880.72x = 115,347 × 76,362.32
  4. Step 4: Simplify right side
    76,880.72x = 8,808,164,525.04
  5. Step 5: Solve for x
    x = 8,808,164,525.04/76,880.72
  6. Step 6: Final answer
    x = 114,569.23

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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.