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Finding the Fourth Proportional to 70,325.60, 105,488.84 and 28,772.60

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Solution

The fourth proportional to 70,325.60, 105,488.84 and 28,772.60 is: 43,159.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,325.60 : 105,488.84 = 28,772.60 : x
  2. Step 2: Convert to fraction form
    70,325.60/105,488.84 = 28,772.60/x
  3. Step 3: Cross multiply
    70,325.60x = 105,488.84 × 28,772.60
  4. Step 4: Simplify right side
    70,325.60x = 3,035,188,197.78
  5. Step 5: Solve for x
    x = 3,035,188,197.78/70,325.60
  6. Step 6: Final answer
    x = 43,159.08

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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.