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Finding the Fourth Proportional to 78,518.40, 117,738.18 and 36,362.22

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Solution

The fourth proportional to 78,518.40, 117,738.18 and 36,362.22 is: 54,525.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,518.40 : 117,738.18 = 36,362.22 : x
  2. Step 2: Convert to fraction form
    78,518.40/117,738.18 = 36,362.22/x
  3. Step 3: Cross multiply
    78,518.40x = 117,738.18 × 36,362.22
  4. Step 4: Simplify right side
    78,518.40x = 4,281,221,603.56
  5. Step 5: Solve for x
    x = 4,281,221,603.56/78,518.40
  6. Step 6: Final answer
    x = 54,525.07

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1.5x scale

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.