Home / 49,457.40-74,113.20-42,021.60

Finding the Fourth Proportional to 49,457.40, 74,113.20 and 42,021.60

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Solution

The fourth proportional to 49,457.40, 74,113.20 and 42,021.60 is: 62,970.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,457.40 : 74,113.20 = 42,021.60 : x
  2. Step 2: Convert to fraction form
    49,457.40/74,113.20 = 42,021.60/x
  3. Step 3: Cross multiply
    49,457.40x = 74,113.20 × 42,021.60
  4. Step 4: Simplify right side
    49,457.40x = 3,114,355,245.12
  5. Step 5: Solve for x
    x = 3,114,355,245.12/49,457.40
  6. Step 6: Final answer
    x = 62,970.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.