Home / 79,241,379.20-118,862,068.80-28,128,564.80

Finding the Fourth Proportional to 79,241,379.20, 118,862,068.80 and 28,128,564.80

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Solution

The fourth proportional to 79,241,379.20, 118,862,068.80 and 28,128,564.80 is: 42,192,847.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,241,379.20 : 118,862,068.80 = 28,128,564.80 : x
  2. Step 2: Convert to fraction form
    79,241,379.20/118,862,068.80 = 28,128,564.80/x
  3. Step 3: Cross multiply
    79,241,379.20x = 118,862,068.80 × 28,128,564.80
  4. Step 4: Simplify right side
    79,241,379.20x = 3,343,419,404,502,858
  5. Step 5: Solve for x
    x = 3,343,419,404,502,858/79,241,379.20
  6. Step 6: Final answer
    x = 42,192,847.20

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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.