Home / 82,986.72-124,487.10-36,272.40

Finding the Fourth Proportional to 82,986.72, 124,487.10 and 36,272.40

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Solution

The fourth proportional to 82,986.72, 124,487.10 and 36,272.40 is: 54,411.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,986.72 : 124,487.10 = 36,272.40 : x
  2. Step 2: Convert to fraction form
    82,986.72/124,487.10 = 36,272.40/x
  3. Step 3: Cross multiply
    82,986.72x = 124,487.10 × 36,272.40
  4. Step 4: Simplify right side
    82,986.72x = 4,515,445,886.04
  5. Step 5: Solve for x
    x = 4,515,445,886.04/82,986.72
  6. Step 6: Final answer
    x = 54,411.67

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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.