Home / 93,121.47-128,432.25-57,247.38

Finding the Fourth Proportional to 93,121.47, 128,432.25 and 57,247.38

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Solution

The fourth proportional to 93,121.47, 128,432.25 and 57,247.38 is: 78,955.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,121.47 : 128,432.25 = 57,247.38 : x
  2. Step 2: Convert to fraction form
    93,121.47/128,432.25 = 57,247.38/x
  3. Step 3: Cross multiply
    93,121.47x = 128,432.25 × 57,247.38
  4. Step 4: Simplify right side
    93,121.47x = 7,352,409,820.01
  5. Step 5: Solve for x
    x = 7,352,409,820.01/93,121.47
  6. Step 6: Final answer
    x = 78,955.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.