Home / 76,805,649.30-115,189,298.28-30,128,622.51

Finding the Fourth Proportional to 76,805,649.30, 115,189,298.28 and 30,128,622.51

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Solution

The fourth proportional to 76,805,649.30, 115,189,298.28 and 30,128,622.51 is: 45,185,411.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,805,649.30 : 115,189,298.28 = 30,128,622.51 : x
  2. Step 2: Convert to fraction form
    76,805,649.30/115,189,298.28 = 30,128,622.51/x
  3. Step 3: Cross multiply
    76,805,649.30x = 115,189,298.28 × 30,128,622.51
  4. Step 4: Simplify right side
    76,805,649.30x = 3,470,494,885,069,912.50
  5. Step 5: Solve for x
    x = 3,470,494,885,069,912.50/76,805,649.30
  6. Step 6: Final answer
    x = 45,185,411.71

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Double scale
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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.