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Finding the Fourth Proportional to 71,023.45, 98,009.03 and 40,787.45

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Solution

The fourth proportional to 71,023.45, 98,009.03 and 40,787.45 is: 56,284.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,023.45 : 98,009.03 = 40,787.45 : x
  2. Step 2: Convert to fraction form
    71,023.45/98,009.03 = 40,787.45/x
  3. Step 3: Cross multiply
    71,023.45x = 98,009.03 × 40,787.45
  4. Step 4: Simplify right side
    71,023.45x = 3,997,538,206.74
  5. Step 5: Solve for x
    x = 3,997,538,206.74/71,023.45
  6. Step 6: Final answer
    x = 56,284.77

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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.