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Finding the Fourth Proportional to 74,560.86, 111,844.80 and 21,970.80

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Solution

The fourth proportional to 74,560.86, 111,844.80 and 21,970.80 is: 32,957.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,560.86 : 111,844.80 = 21,970.80 : x
  2. Step 2: Convert to fraction form
    74,560.86/111,844.80 = 21,970.80/x
  3. Step 3: Cross multiply
    74,560.86x = 111,844.80 × 21,970.80
  4. Step 4: Simplify right side
    74,560.86x = 2,457,319,731.84
  5. Step 5: Solve for x
    x = 2,457,319,731.84/74,560.86
  6. Step 6: Final answer
    x = 32,957.23

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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.