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Finding the Fourth Proportional to 70,635.83, 105,990.07 and 39,040.00

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Solution

The fourth proportional to 70,635.83, 105,990.07 and 39,040.00 is: 58,580.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,635.83 : 105,990.07 = 39,040.00 : x
  2. Step 2: Convert to fraction form
    70,635.83/105,990.07 = 39,040.00/x
  3. Step 3: Cross multiply
    70,635.83x = 105,990.07 × 39,040.00
  4. Step 4: Simplify right side
    70,635.83x = 4,137,852,434.17
  5. Step 5: Solve for x
    x = 4,137,852,434.17/70,635.83
  6. Step 6: Final answer
    x = 58,580.08

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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.