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Finding the Fourth Proportional to 76,326.80, 114,490.20 and 26,390.30

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Solution

The fourth proportional to 76,326.80, 114,490.20 and 26,390.30 is: 39,585.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,326.80 : 114,490.20 = 26,390.30 : x
  2. Step 2: Convert to fraction form
    76,326.80/114,490.20 = 26,390.30/x
  3. Step 3: Cross multiply
    76,326.80x = 114,490.20 × 26,390.30
  4. Step 4: Simplify right side
    76,326.80x = 3,021,430,725.06
  5. Step 5: Solve for x
    x = 3,021,430,725.06/76,326.80
  6. Step 6: Final answer
    x = 39,585.45

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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.