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Finding the Fourth Proportional to 101,880.94, 140,588.64 and 56,555.34

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Solution

The fourth proportional to 101,880.94, 140,588.64 and 56,555.34 is: 78,042.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,880.94 : 140,588.64 = 56,555.34 : x
  2. Step 2: Convert to fraction form
    101,880.94/140,588.64 = 56,555.34/x
  3. Step 3: Cross multiply
    101,880.94x = 140,588.64 × 56,555.34
  4. Step 4: Simplify right side
    101,880.94x = 7,951,038,335.34
  5. Step 5: Solve for x
    x = 7,951,038,335.34/101,880.94
  6. Step 6: Final answer
    x = 78,042.45

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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.