Home / 74,790.48-103,347.72-71,145.84

Finding the Fourth Proportional to 74,790.48, 103,347.72 and 71,145.84

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Solution

The fourth proportional to 74,790.48, 103,347.72 and 71,145.84 is: 98,311.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,790.48 : 103,347.72 = 71,145.84 : x
  2. Step 2: Convert to fraction form
    74,790.48/103,347.72 = 71,145.84/x
  3. Step 3: Cross multiply
    74,790.48x = 103,347.72 × 71,145.84
  4. Step 4: Simplify right side
    74,790.48x = 7,352,760,351.48
  5. Step 5: Solve for x
    x = 7,352,760,351.48/74,790.48
  6. Step 6: Final answer
    x = 98,311.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.