Home / 76,409.04-105,450.72-42,419.60

Finding the Fourth Proportional to 76,409.04, 105,450.72 and 42,419.60

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Solution

The fourth proportional to 76,409.04, 105,450.72 and 42,419.60 is: 58,542.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,409.04 : 105,450.72 = 42,419.60 : x
  2. Step 2: Convert to fraction form
    76,409.04/105,450.72 = 42,419.60/x
  3. Step 3: Cross multiply
    76,409.04x = 105,450.72 × 42,419.60
  4. Step 4: Simplify right side
    76,409.04x = 4,473,177,362.11
  5. Step 5: Solve for x
    x = 4,473,177,362.11/76,409.04
  6. Step 6: Final answer
    x = 58,542.51

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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.