Home / 86,004,420.30-128,922,649.65-76,934,493.90

Finding the Fourth Proportional to 86,004,420.30, 128,922,649.65 and 76,934,493.90

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Solution

The fourth proportional to 86,004,420.30, 128,922,649.65 and 76,934,493.90 is: 115,326,616.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,004,420.30 : 128,922,649.65 = 76,934,493.90 : x
  2. Step 2: Convert to fraction form
    86,004,420.30/128,922,649.65 = 76,934,493.90/x
  3. Step 3: Cross multiply
    86,004,420.30x = 128,922,649.65 × 76,934,493.90
  4. Step 4: Simplify right side
    86,004,420.30x = 9,918,598,803,069,764
  5. Step 5: Solve for x
    x = 9,918,598,803,069,764/86,004,420.30
  6. Step 6: Final answer
    x = 115,326,616.57

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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.