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Finding the Fourth Proportional to 76,903.80, 115,407.30 and 26,983.80

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Solution

The fourth proportional to 76,903.80, 115,407.30 and 26,983.80 is: 40,493.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,903.80 : 115,407.30 = 26,983.80 : x
  2. Step 2: Convert to fraction form
    76,903.80/115,407.30 = 26,983.80/x
  3. Step 3: Cross multiply
    76,903.80x = 115,407.30 × 26,983.80
  4. Step 4: Simplify right side
    76,903.80x = 3,114,127,501.74
  5. Step 5: Solve for x
    x = 3,114,127,501.74/76,903.80
  6. Step 6: Final answer
    x = 40,493.81

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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.