Home / 78,427.61-117,575.28-34,020.91

Finding the Fourth Proportional to 78,427.61, 117,575.28 and 34,020.91

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Solution

The fourth proportional to 78,427.61, 117,575.28 and 34,020.91 is: 51,002.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,427.61 : 117,575.28 = 34,020.91 : x
  2. Step 2: Convert to fraction form
    78,427.61/117,575.28 = 34,020.91/x
  3. Step 3: Cross multiply
    78,427.61x = 117,575.28 × 34,020.91
  4. Step 4: Simplify right side
    78,427.61x = 4,000,017,849.00
  5. Step 5: Solve for x
    x = 4,000,017,849.00/78,427.61
  6. Step 6: Final answer
    x = 51,002.67

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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.