Home / 78,666.35-117,955.79-26,047.13

Finding the Fourth Proportional to 78,666.35, 117,955.79 and 26,047.13

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Solution

The fourth proportional to 78,666.35, 117,955.79 and 26,047.13 is: 39,056.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,666.35 : 117,955.79 = 26,047.13 : x
  2. Step 2: Convert to fraction form
    78,666.35/117,955.79 = 26,047.13/x
  3. Step 3: Cross multiply
    78,666.35x = 117,955.79 × 26,047.13
  4. Step 4: Simplify right side
    78,666.35x = 3,072,409,961.04
  5. Step 5: Solve for x
    x = 3,072,409,961.04/78,666.35
  6. Step 6: Final answer
    x = 39,056.21

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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.