Home / 90,724.50-125,199.81-50,980.50

Finding the Fourth Proportional to 90,724.50, 125,199.81 and 50,980.50

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Solution

The fourth proportional to 90,724.50, 125,199.81 and 50,980.50 is: 70,353.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,724.50 : 125,199.81 = 50,980.50 : x
  2. Step 2: Convert to fraction form
    90,724.50/125,199.81 = 50,980.50/x
  3. Step 3: Cross multiply
    90,724.50x = 125,199.81 × 50,980.50
  4. Step 4: Simplify right side
    90,724.50x = 6,382,748,913.71
  5. Step 5: Solve for x
    x = 6,382,748,913.71/90,724.50
  6. Step 6: Final answer
    x = 70,353.09

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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.