Home / 85,666,917-128,452,085.10-28,143,743.16

Finding the Fourth Proportional to 85,666,917, 128,452,085.10 and 28,143,743.16

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Solution

The fourth proportional to 85,666,917, 128,452,085.10 and 28,143,743.16 is: 42,199,750.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,666,917 : 128,452,085.10 = 28,143,743.16 : x
  2. Step 2: Convert to fraction form
    85,666,917/128,452,085.10 = 28,143,743.16/x
  3. Step 3: Cross multiply
    85,666,917x = 128,452,085.10 × 28,143,743.16
  4. Step 4: Simplify right side
    85,666,917x = 3,615,122,491,420,863
  5. Step 5: Solve for x
    x = 3,615,122,491,420,863/85,666,917
  6. Step 6: Final answer
    x = 42,199,750.13

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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.