Home / 57,117.81-78,820.45-31,623.67

Finding the Fourth Proportional to 57,117.81, 78,820.45 and 31,623.67

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Solution

The fourth proportional to 57,117.81, 78,820.45 and 31,623.67 is: 43,639.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,117.81 : 78,820.45 = 31,623.67 : x
  2. Step 2: Convert to fraction form
    57,117.81/78,820.45 = 31,623.67/x
  3. Step 3: Cross multiply
    57,117.81x = 78,820.45 × 31,623.67
  4. Step 4: Simplify right side
    57,117.81x = 2,492,591,900.05
  5. Step 5: Solve for x
    x = 2,492,591,900.05/57,117.81
  6. Step 6: Final answer
    x = 43,639.49

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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.