Home / 72,068,464.10-108,121,130.50-20,950,482.90

Finding the Fourth Proportional to 72,068,464.10, 108,121,130.50 and 20,950,482.90

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Solution

The fourth proportional to 72,068,464.10, 108,121,130.50 and 20,950,482.90 is: 31,431,083.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,068,464.10 : 108,121,130.50 = 20,950,482.90 : x
  2. Step 2: Convert to fraction form
    72,068,464.10/108,121,130.50 = 20,950,482.90/x
  3. Step 3: Cross multiply
    72,068,464.10x = 108,121,130.50 × 20,950,482.90
  4. Step 4: Simplify right side
    72,068,464.10x = 2,265,189,895,668,918.50
  5. Step 5: Solve for x
    x = 2,265,189,895,668,918.50/72,068,464.10
  6. Step 6: Final answer
    x = 31,431,083.26

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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.