Home / 81,833,538.12-122,766,477.56-30,018,621.84

Finding the Fourth Proportional to 81,833,538.12, 122,766,477.56 and 30,018,621.84

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Solution

The fourth proportional to 81,833,538.12, 122,766,477.56 and 30,018,621.84 is: 45,033,864.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,833,538.12 : 122,766,477.56 = 30,018,621.84 : x
  2. Step 2: Convert to fraction form
    81,833,538.12/122,766,477.56 = 30,018,621.84/x
  3. Step 3: Cross multiply
    81,833,538.12x = 122,766,477.56 × 30,018,621.84
  4. Step 4: Simplify right side
    81,833,538.12x = 3,685,280,464,502,486
  5. Step 5: Solve for x
    x = 3,685,280,464,502,486/81,833,538.12
  6. Step 6: Final answer
    x = 45,033,864.47

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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.