Home / 72,609,738.88-100,203,539.52-40,016,790.40

Finding the Fourth Proportional to 72,609,738.88, 100,203,539.52 and 40,016,790.40

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Solution

The fourth proportional to 72,609,738.88, 100,203,539.52 and 40,016,790.40 is: 55,224,328.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,609,738.88 : 100,203,539.52 = 40,016,790.40 : x
  2. Step 2: Convert to fraction form
    72,609,738.88/100,203,539.52 = 40,016,790.40/x
  3. Step 3: Cross multiply
    72,609,738.88x = 100,203,539.52 × 40,016,790.40
  4. Step 4: Simplify right side
    72,609,738.88x = 4,009,824,038,309,956.50
  5. Step 5: Solve for x
    x = 4,009,824,038,309,956.50/72,609,738.88
  6. Step 6: Final answer
    x = 55,224,328.03

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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.