Home / 74,520.32-102,838.47-40,529.21

Finding the Fourth Proportional to 74,520.32, 102,838.47 and 40,529.21

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Solution

The fourth proportional to 74,520.32, 102,838.47 and 40,529.21 is: 55,930.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,520.32 : 102,838.47 = 40,529.21 : x
  2. Step 2: Convert to fraction form
    74,520.32/102,838.47 = 40,529.21/x
  3. Step 3: Cross multiply
    74,520.32x = 102,838.47 × 40,529.21
  4. Step 4: Simplify right side
    74,520.32x = 4,167,961,946.71
  5. Step 5: Solve for x
    x = 4,167,961,946.71/74,520.32
  6. Step 6: Final answer
    x = 55,930.54

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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.