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Finding the Fourth Proportional to 70,528.40, 105,722.52 and 35,360.72

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Solution

The fourth proportional to 70,528.40, 105,722.52 and 35,360.72 is: 53,005.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,528.40 : 105,722.52 = 35,360.72 : x
  2. Step 2: Convert to fraction form
    70,528.40/105,722.52 = 35,360.72/x
  3. Step 3: Cross multiply
    70,528.40x = 105,722.52 × 35,360.72
  4. Step 4: Simplify right side
    70,528.40x = 3,738,424,427.41
  5. Step 5: Solve for x
    x = 3,738,424,427.41/70,528.40
  6. Step 6: Final answer
    x = 53,005.94

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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.