Home / 93,021.20-139,531.80-55,696.40

Finding the Fourth Proportional to 93,021.20, 139,531.80 and 55,696.40

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Solution

The fourth proportional to 93,021.20, 139,531.80 and 55,696.40 is: 83,544.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,021.20 : 139,531.80 = 55,696.40 : x
  2. Step 2: Convert to fraction form
    93,021.20/139,531.80 = 55,696.40/x
  3. Step 3: Cross multiply
    93,021.20x = 139,531.80 × 55,696.40
  4. Step 4: Simplify right side
    93,021.20x = 7,771,418,945.52
  5. Step 5: Solve for x
    x = 7,771,418,945.52/93,021.20
  6. Step 6: Final answer
    x = 83,544.60

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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.