Home / 78,266.35-117,348.48-51,531.42

Finding the Fourth Proportional to 78,266.35, 117,348.48 and 51,531.42

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Solution

The fourth proportional to 78,266.35, 117,348.48 and 51,531.42 is: 77,263.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,266.35 : 117,348.48 = 51,531.42 : x
  2. Step 2: Convert to fraction form
    78,266.35/117,348.48 = 51,531.42/x
  3. Step 3: Cross multiply
    78,266.35x = 117,348.48 × 51,531.42
  4. Step 4: Simplify right side
    78,266.35x = 6,047,133,809.24
  5. Step 5: Solve for x
    x = 6,047,133,809.24/78,266.35
  6. Step 6: Final answer
    x = 77,263.52

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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.