Home / 81,018,864.80-121,584,284.40-58,319,165.60

Finding the Fourth Proportional to 81,018,864.80, 121,584,284.40 and 58,319,165.60

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Solution

The fourth proportional to 81,018,864.80, 121,584,284.40 and 58,319,165.60 is: 87,519,049.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,018,864.80 : 121,584,284.40 = 58,319,165.60 : x
  2. Step 2: Convert to fraction form
    81,018,864.80/121,584,284.40 = 58,319,165.60/x
  3. Step 3: Cross multiply
    81,018,864.80x = 121,584,284.40 × 58,319,165.60
  4. Step 4: Simplify right side
    81,018,864.80x = 7,090,694,016,281,097
  5. Step 5: Solve for x
    x = 7,090,694,016,281,097/81,018,864.80
  6. Step 6: Final answer
    x = 87,519,049.22

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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.