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Finding the Fourth Proportional to 78,684.84, 118,038.90 and 26,082.72

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Solution

The fourth proportional to 78,684.84, 118,038.90 and 26,082.72 is: 39,127.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,684.84 : 118,038.90 = 26,082.72 : x
  2. Step 2: Convert to fraction form
    78,684.84/118,038.90 = 26,082.72/x
  3. Step 3: Cross multiply
    78,684.84x = 118,038.90 × 26,082.72
  4. Step 4: Simplify right side
    78,684.84x = 3,078,775,577.81
  5. Step 5: Solve for x
    x = 3,078,775,577.81/78,684.84
  6. Step 6: Final answer
    x = 39,127.94

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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.