Home / 72,091.24-99,478.80-40,259.45

Finding the Fourth Proportional to 72,091.24, 99,478.80 and 40,259.45

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Solution

The fourth proportional to 72,091.24, 99,478.80 and 40,259.45 is: 55,554.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,091.24 : 99,478.80 = 40,259.45 : x
  2. Step 2: Convert to fraction form
    72,091.24/99,478.80 = 40,259.45/x
  3. Step 3: Cross multiply
    72,091.24x = 99,478.80 × 40,259.45
  4. Step 4: Simplify right side
    72,091.24x = 4,004,962,023.36
  5. Step 5: Solve for x
    x = 4,004,962,023.36/72,091.24
  6. Step 6: Final answer
    x = 55,554.08

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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.