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Finding the Fourth Proportional to 103,533.67, 155,303.99 and 28,647.55

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Solution

The fourth proportional to 103,533.67, 155,303.99 and 28,647.55 is: 42,972.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,533.67 : 155,303.99 = 28,647.55 : x
  2. Step 2: Convert to fraction form
    103,533.67/155,303.99 = 28,647.55/x
  3. Step 3: Cross multiply
    103,533.67x = 155,303.99 × 28,647.55
  4. Step 4: Simplify right side
    103,533.67x = 4,449,078,818.72
  5. Step 5: Solve for x
    x = 4,449,078,818.72/103,533.67
  6. Step 6: Final answer
    x = 42,972.29

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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.