Home / 81,679,460.46-122,445,034.64-40,751,417.58

Finding the Fourth Proportional to 81,679,460.46, 122,445,034.64 and 40,751,417.58

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Solution

The fourth proportional to 81,679,460.46, 122,445,034.64 and 40,751,417.58 is: 61,090,128.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,679,460.46 : 122,445,034.64 = 40,751,417.58 : x
  2. Step 2: Convert to fraction form
    81,679,460.46/122,445,034.64 = 40,751,417.58/x
  3. Step 3: Cross multiply
    81,679,460.46x = 122,445,034.64 × 40,751,417.58
  4. Step 4: Simplify right side
    81,679,460.46x = 4,989,808,737,212,205
  5. Step 5: Solve for x
    x = 4,989,808,737,212,205/81,679,460.46
  6. Step 6: Final answer
    x = 61,090,128.52

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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.