Home / 90,420.87-124,774.71-52,182.02

Finding the Fourth Proportional to 90,420.87, 124,774.71 and 52,182.02

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Solution

The fourth proportional to 90,420.87, 124,774.71 and 52,182.02 is: 72,007.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,420.87 : 124,774.71 = 52,182.02 : x
  2. Step 2: Convert to fraction form
    90,420.87/124,774.71 = 52,182.02/x
  3. Step 3: Cross multiply
    90,420.87x = 124,774.71 × 52,182.02
  4. Step 4: Simplify right side
    90,420.87x = 6,510,995,788.84
  5. Step 5: Solve for x
    x = 6,510,995,788.84/90,420.87
  6. Step 6: Final answer
    x = 72,007.67

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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.