Home / 78,994.37-109,012.95-45,002.35

Finding the Fourth Proportional to 78,994.37, 109,012.95 and 45,002.35

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Solution

The fourth proportional to 78,994.37, 109,012.95 and 45,002.35 is: 62,103.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,994.37 : 109,012.95 = 45,002.35 : x
  2. Step 2: Convert to fraction form
    78,994.37/109,012.95 = 45,002.35/x
  3. Step 3: Cross multiply
    78,994.37x = 109,012.95 × 45,002.35
  4. Step 4: Simplify right side
    78,994.37x = 4,905,838,930.43
  5. Step 5: Solve for x
    x = 4,905,838,930.43/78,994.37
  6. Step 6: Final answer
    x = 62,103.65

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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.