Home / 81,913,681.19-122,888,848.85-30,796,142.87

Finding the Fourth Proportional to 81,913,681.19, 122,888,848.85 and 30,796,142.87

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Solution

The fourth proportional to 81,913,681.19, 122,888,848.85 and 30,796,142.87 is: 46,201,104.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,913,681.19 : 122,888,848.85 = 30,796,142.87 : x
  2. Step 2: Convert to fraction form
    81,913,681.19/122,888,848.85 = 30,796,142.87/x
  3. Step 3: Cross multiply
    81,913,681.19x = 122,888,848.85 × 30,796,142.87
  4. Step 4: Simplify right side
    81,913,681.19x = 3,784,502,546,160,454.50
  5. Step 5: Solve for x
    x = 3,784,502,546,160,454.50/81,913,681.19
  6. Step 6: Final answer
    x = 46,201,104.52

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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.