Home / 74,279.16-111,438.18-21,689.10

Finding the Fourth Proportional to 74,279.16, 111,438.18 and 21,689.10

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Solution

The fourth proportional to 74,279.16, 111,438.18 and 21,689.10 is: 32,539.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,279.16 : 111,438.18 = 21,689.10 : x
  2. Step 2: Convert to fraction form
    74,279.16/111,438.18 = 21,689.10/x
  3. Step 3: Cross multiply
    74,279.16x = 111,438.18 × 21,689.10
  4. Step 4: Simplify right side
    74,279.16x = 2,416,993,829.84
  5. Step 5: Solve for x
    x = 2,416,993,829.84/74,279.16
  6. Step 6: Final answer
    x = 32,539.33

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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.