Home / 91,455.14-126,213-51,166.50

Finding the Fourth Proportional to 91,455.14, 126,213 and 51,166.50

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Solution

The fourth proportional to 91,455.14, 126,213 and 51,166.50 is: 70,612.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,455.14 : 126,213 = 51,166.50 : x
  2. Step 2: Convert to fraction form
    91,455.14/126,213 = 51,166.50/x
  3. Step 3: Cross multiply
    91,455.14x = 126,213 × 51,166.50
  4. Step 4: Simplify right side
    91,455.14x = 6,457,877,464.50
  5. Step 5: Solve for x
    x = 6,457,877,464.50/91,455.14
  6. Step 6: Final answer
    x = 70,612.52

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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.