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Finding the Fourth Proportional to 74,703.42, 103,090.74 and 40,711.92

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Solution

The fourth proportional to 74,703.42, 103,090.74 and 40,711.92 is: 56,182.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,703.42 : 103,090.74 = 40,711.92 : x
  2. Step 2: Convert to fraction form
    74,703.42/103,090.74 = 40,711.92/x
  3. Step 3: Cross multiply
    74,703.42x = 103,090.74 × 40,711.92
  4. Step 4: Simplify right side
    74,703.42x = 4,197,021,240.61
  5. Step 5: Solve for x
    x = 4,197,021,240.61/74,703.42
  6. Step 6: Final answer
    x = 56,182.45

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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.