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Finding the Fourth Proportional to 70,180.65, 105,271.43 and 28,064.28

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Solution

The fourth proportional to 70,180.65, 105,271.43 and 28,064.28 is: 42,096.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,180.65 : 105,271.43 = 28,064.28 : x
  2. Step 2: Convert to fraction form
    70,180.65/105,271.43 = 28,064.28/x
  3. Step 3: Cross multiply
    70,180.65x = 105,271.43 × 28,064.28
  4. Step 4: Simplify right side
    70,180.65x = 2,954,366,887.52
  5. Step 5: Solve for x
    x = 2,954,366,887.52/70,180.65
  6. Step 6: Final answer
    x = 42,096.60

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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.