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Finding the Fourth Proportional to 70,040.94, 96,664.68 and 39,830.76

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Solution

The fourth proportional to 70,040.94, 96,664.68 and 39,830.76 is: 54,971.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,040.94 : 96,664.68 = 39,830.76 : x
  2. Step 2: Convert to fraction form
    70,040.94/96,664.68 = 39,830.76/x
  3. Step 3: Cross multiply
    70,040.94x = 96,664.68 × 39,830.76
  4. Step 4: Simplify right side
    70,040.94x = 3,850,227,669.56
  5. Step 5: Solve for x
    x = 3,850,227,669.56/70,040.94
  6. Step 6: Final answer
    x = 54,971.10

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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.