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Finding the Fourth Proportional to 28,079.51, 42,119.33 and 7,303.01

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Solution

The fourth proportional to 28,079.51, 42,119.33 and 7,303.01 is: 10,954.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,079.51 : 42,119.33 = 7,303.01 : x
  2. Step 2: Convert to fraction form
    28,079.51/42,119.33 = 7,303.01/x
  3. Step 3: Cross multiply
    28,079.51x = 42,119.33 × 7,303.01
  4. Step 4: Simplify right side
    28,079.51x = 307,597,641.07
  5. Step 5: Solve for x
    x = 307,597,641.07/28,079.51
  6. Step 6: Final answer
    x = 10,954.53

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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.