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Finding the Fourth Proportional to 40,970.71, 61,447.41 and 19,901.70

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Solution

The fourth proportional to 40,970.71, 61,447.41 and 19,901.70 is: 29,848.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,970.71 : 61,447.41 = 19,901.70 : x
  2. Step 2: Convert to fraction form
    40,970.71/61,447.41 = 19,901.70/x
  3. Step 3: Cross multiply
    40,970.71x = 61,447.41 × 19,901.70
  4. Step 4: Simplify right side
    40,970.71x = 1,222,907,919.60
  5. Step 5: Solve for x
    x = 1,222,907,919.60/40,970.71
  6. Step 6: Final answer
    x = 29,848.34

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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.