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Finding the Fourth Proportional to 76,172.04, 105,111 and 45,544.32

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Solution

The fourth proportional to 76,172.04, 105,111 and 45,544.32 is: 62,847.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,172.04 : 105,111 = 45,544.32 : x
  2. Step 2: Convert to fraction form
    76,172.04/105,111 = 45,544.32/x
  3. Step 3: Cross multiply
    76,172.04x = 105,111 × 45,544.32
  4. Step 4: Simplify right side
    76,172.04x = 4,787,209,019.52
  5. Step 5: Solve for x
    x = 4,787,209,019.52/76,172.04
  6. Step 6: Final answer
    x = 62,847.33

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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.