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Finding the Fourth Proportional to 104,783.76, 144,604.38 and 57,040.32

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Solution

The fourth proportional to 104,783.76, 144,604.38 and 57,040.32 is: 78,717.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,783.76 : 144,604.38 = 57,040.32 : x
  2. Step 2: Convert to fraction form
    104,783.76/144,604.38 = 57,040.32/x
  3. Step 3: Cross multiply
    104,783.76x = 144,604.38 × 57,040.32
  4. Step 4: Simplify right side
    104,783.76x = 8,248,280,108.60
  5. Step 5: Solve for x
    x = 8,248,280,108.60/104,783.76
  6. Step 6: Final answer
    x = 78,717.16

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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.