Home / 72,946.36-100,665.96-39,412.36

Finding the Fourth Proportional to 72,946.36, 100,665.96 and 39,412.36

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Solution

The fourth proportional to 72,946.36, 100,665.96 and 39,412.36 is: 54,389.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,946.36 : 100,665.96 = 39,412.36 : x
  2. Step 2: Convert to fraction form
    72,946.36/100,665.96 = 39,412.36/x
  3. Step 3: Cross multiply
    72,946.36x = 100,665.96 × 39,412.36
  4. Step 4: Simplify right side
    72,946.36x = 3,967,483,055.27
  5. Step 5: Solve for x
    x = 3,967,483,055.27/72,946.36
  6. Step 6: Final answer
    x = 54,389.05

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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.