Home / 82,421.70-113,709.75-53,775.06

Finding the Fourth Proportional to 82,421.70, 113,709.75 and 53,775.06

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Solution

The fourth proportional to 82,421.70, 113,709.75 and 53,775.06 is: 74,188.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,421.70 : 113,709.75 = 53,775.06 : x
  2. Step 2: Convert to fraction form
    82,421.70/113,709.75 = 53,775.06/x
  3. Step 3: Cross multiply
    82,421.70x = 113,709.75 × 53,775.06
  4. Step 4: Simplify right side
    82,421.70x = 6,114,748,628.84
  5. Step 5: Solve for x
    x = 6,114,748,628.84/82,421.70
  6. Step 6: Final answer
    x = 74,188.58

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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.