Home / 72,172.14-99,593.53-39,904.89

Finding the Fourth Proportional to 72,172.14, 99,593.53 and 39,904.89

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Solution

The fourth proportional to 72,172.14, 99,593.53 and 39,904.89 is: 55,066.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,172.14 : 99,593.53 = 39,904.89 : x
  2. Step 2: Convert to fraction form
    72,172.14/99,593.53 = 39,904.89/x
  3. Step 3: Cross multiply
    72,172.14x = 99,593.53 × 39,904.89
  4. Step 4: Simplify right side
    72,172.14x = 3,974,268,859.36
  5. Step 5: Solve for x
    x = 3,974,268,859.36/72,172.14
  6. Step 6: Final answer
    x = 55,066.52

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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.