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Finding the Fourth Proportional to 27,202,580.80, 40,803,871.20 and 21,037,865.20

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Solution

The fourth proportional to 27,202,580.80, 40,803,871.20 and 21,037,865.20 is: 31,556,797.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,202,580.80 : 40,803,871.20 = 21,037,865.20 : x
  2. Step 2: Convert to fraction form
    27,202,580.80/40,803,871.20 = 21,037,865.20/x
  3. Step 3: Cross multiply
    27,202,580.80x = 40,803,871.20 × 21,037,865.20
  4. Step 4: Simplify right side
    27,202,580.80x = 858,426,341,943,762.25
  5. Step 5: Solve for x
    x = 858,426,341,943,762.25/27,202,580.80
  6. Step 6: Final answer
    x = 31,556,797.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.