Home / 90,311.21-124,689.74-56,333.33

Finding the Fourth Proportional to 90,311.21, 124,689.74 and 56,333.33

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Solution

The fourth proportional to 90,311.21, 124,689.74 and 56,333.33 is: 77,777.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,311.21 : 124,689.74 = 56,333.33 : x
  2. Step 2: Convert to fraction form
    90,311.21/124,689.74 = 56,333.33/x
  3. Step 3: Cross multiply
    90,311.21x = 124,689.74 × 56,333.33
  4. Step 4: Simplify right side
    90,311.21x = 7,024,188,271.03
  5. Step 5: Solve for x
    x = 7,024,188,271.03/90,311.21
  6. Step 6: Final answer
    x = 77,777.59

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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.