Home / 72,748.47-100,392.42-40,917.78

Finding the Fourth Proportional to 72,748.47, 100,392.42 and 40,917.78

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Solution

The fourth proportional to 72,748.47, 100,392.42 and 40,917.78 is: 56,466.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,748.47 : 100,392.42 = 40,917.78 : x
  2. Step 2: Convert to fraction form
    72,748.47/100,392.42 = 40,917.78/x
  3. Step 3: Cross multiply
    72,748.47x = 100,392.42 × 40,917.78
  4. Step 4: Simplify right side
    72,748.47x = 4,107,834,955.23
  5. Step 5: Solve for x
    x = 4,107,834,955.23/72,748.47
  6. Step 6: Final answer
    x = 56,466.27

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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.