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Finding the Fourth Proportional to 69,987,206.40, 104,980,809.60 and 52,743,148.80

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Solution

The fourth proportional to 69,987,206.40, 104,980,809.60 and 52,743,148.80 is: 79,114,723.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,987,206.40 : 104,980,809.60 = 52,743,148.80 : x
  2. Step 2: Convert to fraction form
    69,987,206.40/104,980,809.60 = 52,743,148.80/x
  3. Step 3: Cross multiply
    69,987,206.40x = 104,980,809.60 × 52,743,148.80
  4. Step 4: Simplify right side
    69,987,206.40x = 5,537,018,461,877,268
  5. Step 5: Solve for x
    x = 5,537,018,461,877,268/69,987,206.40
  6. Step 6: Final answer
    x = 79,114,723.20

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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.