Home / 72,602.06-100,187.34-40,338.72

Finding the Fourth Proportional to 72,602.06, 100,187.34 and 40,338.72

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Solution

The fourth proportional to 72,602.06, 100,187.34 and 40,338.72 is: 55,665.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,602.06 : 100,187.34 = 40,338.72 : x
  2. Step 2: Convert to fraction form
    72,602.06/100,187.34 = 40,338.72/x
  3. Step 3: Cross multiply
    72,602.06x = 100,187.34 × 40,338.72
  4. Step 4: Simplify right side
    72,602.06x = 4,041,429,055.80
  5. Step 5: Solve for x
    x = 4,041,429,055.80/72,602.06
  6. Step 6: Final answer
    x = 55,665.49

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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.