Home / 52,211.04-78,316.20-12,768.72

Finding the Fourth Proportional to 52,211.04, 78,316.20 and 12,768.72

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Solution

The fourth proportional to 52,211.04, 78,316.20 and 12,768.72 is: 19,152.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,211.04 : 78,316.20 = 12,768.72 : x
  2. Step 2: Convert to fraction form
    52,211.04/78,316.20 = 12,768.72/x
  3. Step 3: Cross multiply
    52,211.04x = 78,316.20 × 12,768.72
  4. Step 4: Simplify right side
    52,211.04x = 999,997,629.26
  5. Step 5: Solve for x
    x = 999,997,629.26/52,211.04
  6. Step 6: Final answer
    x = 19,152.99

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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.