Home / 276,724.90-415,087.65-77,045.72

Finding the Fourth Proportional to 276,724.90, 415,087.65 and 77,045.72

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Solution

The fourth proportional to 276,724.90, 415,087.65 and 77,045.72 is: 115,568.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,724.90 : 415,087.65 = 77,045.72 : x
  2. Step 2: Convert to fraction form
    276,724.90/415,087.65 = 77,045.72/x
  3. Step 3: Cross multiply
    276,724.90x = 415,087.65 × 77,045.72
  4. Step 4: Simplify right side
    276,724.90x = 31,980,727,895.08
  5. Step 5: Solve for x
    x = 31,980,727,895.08/276,724.90
  6. Step 6: Final answer
    x = 115,568.67

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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.