Home / 76,220.49-105,173.78-42,220.56

Finding the Fourth Proportional to 76,220.49, 105,173.78 and 42,220.56

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Solution

The fourth proportional to 76,220.49, 105,173.78 and 42,220.56 is: 58,258.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,220.49 : 105,173.78 = 42,220.56 : x
  2. Step 2: Convert to fraction form
    76,220.49/105,173.78 = 42,220.56/x
  3. Step 3: Cross multiply
    76,220.49x = 105,173.78 × 42,220.56
  4. Step 4: Simplify right side
    76,220.49x = 4,440,495,677.81
  5. Step 5: Solve for x
    x = 4,440,495,677.81/76,220.49
  6. Step 6: Final answer
    x = 58,258.56

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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.