Home / 51,056.72-70,459.92-30,917.36

Finding the Fourth Proportional to 51,056.72, 70,459.92 and 30,917.36

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Solution

The fourth proportional to 51,056.72, 70,459.92 and 30,917.36 is: 42,666.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,056.72 : 70,459.92 = 30,917.36 : x
  2. Step 2: Convert to fraction form
    51,056.72/70,459.92 = 30,917.36/x
  3. Step 3: Cross multiply
    51,056.72x = 70,459.92 × 30,917.36
  4. Step 4: Simplify right side
    51,056.72x = 2,178,434,712.21
  5. Step 5: Solve for x
    x = 2,178,434,712.21/51,056.72
  6. Step 6: Final answer
    x = 42,666.95

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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.