Home / 72,748,989.80-100,378,619.26-41,803,180.38

Finding the Fourth Proportional to 72,748,989.80, 100,378,619.26 and 41,803,180.38

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Solution

The fourth proportional to 72,748,989.80, 100,378,619.26 and 41,803,180.38 is: 57,679,777.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,748,989.80 : 100,378,619.26 = 41,803,180.38 : x
  2. Step 2: Convert to fraction form
    72,748,989.80/100,378,619.26 = 41,803,180.38/x
  3. Step 3: Cross multiply
    72,748,989.80x = 100,378,619.26 × 41,803,180.38
  4. Step 4: Simplify right side
    72,748,989.80x = 4,196,145,527,221,122.50
  5. Step 5: Solve for x
    x = 4,196,145,527,221,122.50/72,748,989.80
  6. Step 6: Final answer
    x = 57,679,777.26

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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.