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Finding the Fourth Proportional to 78,373.61, 117,537.34 and 22,218.63

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Solution

The fourth proportional to 78,373.61, 117,537.34 and 22,218.63 is: 33,321.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,373.61 : 117,537.34 = 22,218.63 : x
  2. Step 2: Convert to fraction form
    78,373.61/117,537.34 = 22,218.63/x
  3. Step 3: Cross multiply
    78,373.61x = 117,537.34 × 22,218.63
  4. Step 4: Simplify right side
    78,373.61x = 2,611,518,575.81
  5. Step 5: Solve for x
    x = 2,611,518,575.81/78,373.61
  6. Step 6: Final answer
    x = 33,321.40

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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.