Home / 52,192.71-78,289.11-12,749.40

Finding the Fourth Proportional to 52,192.71, 78,289.11 and 12,749.40

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Solution

The fourth proportional to 52,192.71, 78,289.11 and 12,749.40 is: 19,124.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,192.71 : 78,289.11 = 12,749.40 : x
  2. Step 2: Convert to fraction form
    52,192.71/78,289.11 = 12,749.40/x
  3. Step 3: Cross multiply
    52,192.71x = 78,289.11 × 12,749.40
  4. Step 4: Simplify right side
    52,192.71x = 998,139,179.03
  5. Step 5: Solve for x
    x = 998,139,179.03/52,192.71
  6. Step 6: Final answer
    x = 19,124.11

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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.