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Finding the Fourth Proportional to 74,501.96, 102,812.83 and 40,510.42

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Solution

The fourth proportional to 74,501.96, 102,812.83 and 40,510.42 is: 55,904.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,501.96 : 102,812.83 = 40,510.42 : x
  2. Step 2: Convert to fraction form
    74,501.96/102,812.83 = 40,510.42/x
  3. Step 3: Cross multiply
    74,501.96x = 102,812.83 × 40,510.42
  4. Step 4: Simplify right side
    74,501.96x = 4,164,990,924.69
  5. Step 5: Solve for x
    x = 4,164,990,924.69/74,501.96
  6. Step 6: Final answer
    x = 55,904.45

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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.