Home / 52,061.09-78,091.63-12,618.20

Finding the Fourth Proportional to 52,061.09, 78,091.63 and 12,618.20

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Solution

The fourth proportional to 52,061.09, 78,091.63 and 12,618.20 is: 18,927.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,061.09 : 78,091.63 = 12,618.20 : x
  2. Step 2: Convert to fraction form
    52,061.09/78,091.63 = 12,618.20/x
  3. Step 3: Cross multiply
    52,061.09x = 78,091.63 × 12,618.20
  4. Step 4: Simplify right side
    52,061.09x = 985,375,805.67
  5. Step 5: Solve for x
    x = 985,375,805.67/52,061.09
  6. Step 6: Final answer
    x = 18,927.30

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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.