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Finding the Fourth Proportional to 70,970.48, 106,497.03 and 39,406.94

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Solution

The fourth proportional to 70,970.48, 106,497.03 and 39,406.94 is: 59,133.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,970.48 : 106,497.03 = 39,406.94 : x
  2. Step 2: Convert to fraction form
    70,970.48/106,497.03 = 39,406.94/x
  3. Step 3: Cross multiply
    70,970.48x = 106,497.03 × 39,406.94
  4. Step 4: Simplify right side
    70,970.48x = 4,196,722,071.39
  5. Step 5: Solve for x
    x = 4,196,722,071.39/70,970.48
  6. Step 6: Final answer
    x = 59,133.35

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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.