Home / 85,904,023.50-128,876,210.12-28,396,292.72

Finding the Fourth Proportional to 85,904,023.50, 128,876,210.12 and 28,396,292.72

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Solution

The fourth proportional to 85,904,023.50, 128,876,210.12 and 28,396,292.72 is: 42,601,108.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,904,023.50 : 128,876,210.12 = 28,396,292.72 : x
  2. Step 2: Convert to fraction form
    85,904,023.50/128,876,210.12 = 28,396,292.72/x
  3. Step 3: Cross multiply
    85,904,023.50x = 128,876,210.12 × 28,396,292.72
  4. Step 4: Simplify right side
    85,904,023.50x = 3,659,606,586,638,356
  5. Step 5: Solve for x
    x = 3,659,606,586,638,356/85,904,023.50
  6. Step 6: Final answer
    x = 42,601,108.05

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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.