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Finding the Fourth Proportional to 73,953.32, 102,055.58 and 40,419.32

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Solution

The fourth proportional to 73,953.32, 102,055.58 and 40,419.32 is: 55,778.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,953.32 : 102,055.58 = 40,419.32 : x
  2. Step 2: Convert to fraction form
    73,953.32/102,055.58 = 40,419.32/x
  3. Step 3: Cross multiply
    73,953.32x = 102,055.58 × 40,419.32
  4. Step 4: Simplify right side
    73,953.32x = 4,125,017,145.81
  5. Step 5: Solve for x
    x = 4,125,017,145.81/73,953.32
  6. Step 6: Final answer
    x = 55,778.66

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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.