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Finding the Fourth Proportional to 84,425.58, 117,040.08 and 79,931.34

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Solution

The fourth proportional to 84,425.58, 117,040.08 and 79,931.34 is: 110,809.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,425.58 : 117,040.08 = 79,931.34 : x
  2. Step 2: Convert to fraction form
    84,425.58/117,040.08 = 79,931.34/x
  3. Step 3: Cross multiply
    84,425.58x = 117,040.08 × 79,931.34
  4. Step 4: Simplify right side
    84,425.58x = 9,355,170,428.11
  5. Step 5: Solve for x
    x = 9,355,170,428.11/84,425.58
  6. Step 6: Final answer
    x = 110,809.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.