Home / 90,811.85-136,216.40-40,856.67

Finding the Fourth Proportional to 90,811.85, 136,216.40 and 40,856.67

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Solution

The fourth proportional to 90,811.85, 136,216.40 and 40,856.67 is: 61,284.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,811.85 : 136,216.40 = 40,856.67 : x
  2. Step 2: Convert to fraction form
    90,811.85/136,216.40 = 40,856.67/x
  3. Step 3: Cross multiply
    90,811.85x = 136,216.40 × 40,856.67
  4. Step 4: Simplify right side
    90,811.85x = 5,565,348,503.39
  5. Step 5: Solve for x
    x = 5,565,348,503.39/90,811.85
  6. Step 6: Final answer
    x = 61,284.39

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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.