Home / 85,414,862.91-128,326,690.88-54,769,483.50

Finding the Fourth Proportional to 85,414,862.91, 128,326,690.88 and 54,769,483.50

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Solution

The fourth proportional to 85,414,862.91, 128,326,690.88 and 54,769,483.50 is: 82,285,287.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,414,862.91 : 128,326,690.88 = 54,769,483.50 : x
  2. Step 2: Convert to fraction form
    85,414,862.91/128,326,690.88 = 54,769,483.50/x
  3. Step 3: Cross multiply
    85,414,862.91x = 128,326,690.88 × 54,769,483.50
  4. Step 4: Simplify right side
    85,414,862.91x = 7,028,386,578,761,760
  5. Step 5: Solve for x
    x = 7,028,386,578,761,760/85,414,862.91
  6. Step 6: Final answer
    x = 82,285,287.82

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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.