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Finding the Fourth Proportional to 52,259.60, 78,366.72 and 18,968.60

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Solution

The fourth proportional to 52,259.60, 78,366.72 and 18,968.60 is: 28,444.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,259.60 : 78,366.72 = 18,968.60 : x
  2. Step 2: Convert to fraction form
    52,259.60/78,366.72 = 18,968.60/x
  3. Step 3: Cross multiply
    52,259.60x = 78,366.72 × 18,968.60
  4. Step 4: Simplify right side
    52,259.60x = 1,486,506,964.99
  5. Step 5: Solve for x
    x = 1,486,506,964.99/52,259.60
  6. Step 6: Final answer
    x = 28,444.67

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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.