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Finding the Fourth Proportional to 52,110.76, 78,119.76 and 18,823.40

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Solution

The fourth proportional to 52,110.76, 78,119.76 and 18,823.40 is: 28,218.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,110.76 : 78,119.76 = 18,823.40 : x
  2. Step 2: Convert to fraction form
    52,110.76/78,119.76 = 18,823.40/x
  3. Step 3: Cross multiply
    52,110.76x = 78,119.76 × 18,823.40
  4. Step 4: Simplify right side
    52,110.76x = 1,470,479,490.38
  5. Step 5: Solve for x
    x = 1,470,479,490.38/52,110.76
  6. Step 6: Final answer
    x = 28,218.35

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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.