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Finding the Fourth Proportional to 47,342.40, 70,927.20 and 28,852.80

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Solution

The fourth proportional to 47,342.40, 70,927.20 and 28,852.80 is: 43,226.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,342.40 : 70,927.20 = 28,852.80 : x
  2. Step 2: Convert to fraction form
    47,342.40/70,927.20 = 28,852.80/x
  3. Step 3: Cross multiply
    47,342.40x = 70,927.20 × 28,852.80
  4. Step 4: Simplify right side
    47,342.40x = 2,046,448,316.16
  5. Step 5: Solve for x
    x = 2,046,448,316.16/47,342.40
  6. Step 6: Final answer
    x = 43,226.54

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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.