Home / 85,414,866-128,326,695.57-54,769,486.59

Finding the Fourth Proportional to 85,414,866, 128,326,695.57 and 54,769,486.59

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Solution

The fourth proportional to 85,414,866, 128,326,695.57 and 54,769,486.59 is: 82,285,292.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,414,866 : 128,326,695.57 = 54,769,486.59 : x
  2. Step 2: Convert to fraction form
    85,414,866/128,326,695.57 = 54,769,486.59/x
  3. Step 3: Cross multiply
    85,414,866x = 128,326,695.57 × 54,769,486.59
  4. Step 4: Simplify right side
    85,414,866x = 7,028,387,232,160,127
  5. Step 5: Solve for x
    x = 7,028,387,232,160,127/85,414,866
  6. Step 6: Final answer
    x = 82,285,292.49

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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.