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Finding the Fourth Proportional to 78,595.63, 117,908.03 and 26,005.57

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Solution

The fourth proportional to 78,595.63, 117,908.03 and 26,005.57 is: 39,013.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,595.63 : 117,908.03 = 26,005.57 : x
  2. Step 2: Convert to fraction form
    78,595.63/117,908.03 = 26,005.57/x
  3. Step 3: Cross multiply
    78,595.63x = 117,908.03 × 26,005.57
  4. Step 4: Simplify right side
    78,595.63x = 3,066,264,808.16
  5. Step 5: Solve for x
    x = 3,066,264,808.16/78,595.63
  6. Step 6: Final answer
    x = 39,013.17

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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.