Home / 72,437,821.20-108,656,731.80-18,585,133.20

Finding the Fourth Proportional to 72,437,821.20, 108,656,731.80 and 18,585,133.20

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Solution

The fourth proportional to 72,437,821.20, 108,656,731.80 and 18,585,133.20 is: 27,877,699.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,437,821.20 : 108,656,731.80 = 18,585,133.20 : x
  2. Step 2: Convert to fraction form
    72,437,821.20/108,656,731.80 = 18,585,133.20/x
  3. Step 3: Cross multiply
    72,437,821.20x = 108,656,731.80 × 18,585,133.20
  4. Step 4: Simplify right side
    72,437,821.20x = 2,019,399,833,579,675.50
  5. Step 5: Solve for x
    x = 2,019,399,833,579,675.50/72,437,821.20
  6. Step 6: Final answer
    x = 27,877,699.80

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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.