Home / 78,285.66-117,434.81-22,126.21

Finding the Fourth Proportional to 78,285.66, 117,434.81 and 22,126.21

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Solution

The fourth proportional to 78,285.66, 117,434.81 and 22,126.21 is: 33,191.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,285.66 : 117,434.81 = 22,126.21 : x
  2. Step 2: Convert to fraction form
    78,285.66/117,434.81 = 22,126.21/x
  3. Step 3: Cross multiply
    78,285.66x = 117,434.81 × 22,126.21
  4. Step 4: Simplify right side
    78,285.66x = 2,598,387,267.37
  5. Step 5: Solve for x
    x = 2,598,387,267.37/78,285.66
  6. Step 6: Final answer
    x = 33,191.10

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1.5x scale

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.