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Finding the Fourth Proportional to 78,225.07, 117,341.25 and 22,821.07

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Solution

The fourth proportional to 78,225.07, 117,341.25 and 22,821.07 is: 34,232.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,225.07 : 117,341.25 = 22,821.07 : x
  2. Step 2: Convert to fraction form
    78,225.07/117,341.25 = 22,821.07/x
  3. Step 3: Cross multiply
    78,225.07x = 117,341.25 × 22,821.07
  4. Step 4: Simplify right side
    78,225.07x = 2,677,852,880.14
  5. Step 5: Solve for x
    x = 2,677,852,880.14/78,225.07
  6. Step 6: Final answer
    x = 34,232.67

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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.