Home / 78,320.96-117,303.14-61,348.02

Finding the Fourth Proportional to 78,320.96, 117,303.14 and 61,348.02

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Solution

The fourth proportional to 78,320.96, 117,303.14 and 61,348.02 is: 91,882.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,320.96 : 117,303.14 = 61,348.02 : x
  2. Step 2: Convert to fraction form
    78,320.96/117,303.14 = 61,348.02/x
  3. Step 3: Cross multiply
    78,320.96x = 117,303.14 × 61,348.02
  4. Step 4: Simplify right side
    78,320.96x = 7,196,315,072.04
  5. Step 5: Solve for x
    x = 7,196,315,072.04/78,320.96
  6. Step 6: Final answer
    x = 91,882.37

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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.