Home / 86,640.96-119,565-50,831.67

Finding the Fourth Proportional to 86,640.96, 119,565 and 50,831.67

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Solution

The fourth proportional to 86,640.96, 119,565 and 50,831.67 is: 70,147.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,640.96 : 119,565 = 50,831.67 : x
  2. Step 2: Convert to fraction form
    86,640.96/119,565 = 50,831.67/x
  3. Step 3: Cross multiply
    86,640.96x = 119,565 × 50,831.67
  4. Step 4: Simplify right side
    86,640.96x = 6,077,688,623.55
  5. Step 5: Solve for x
    x = 6,077,688,623.55/86,640.96
  6. Step 6: Final answer
    x = 70,147.98

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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.