Home / 85,890,533.48-128,956,869.12-61,616,227.68

Finding the Fourth Proportional to 85,890,533.48, 128,956,869.12 and 61,616,227.68

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Solution

The fourth proportional to 85,890,533.48, 128,956,869.12 and 61,616,227.68 is: 92,511,194.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,890,533.48 : 128,956,869.12 = 61,616,227.68 : x
  2. Step 2: Convert to fraction form
    85,890,533.48/128,956,869.12 = 61,616,227.68/x
  3. Step 3: Cross multiply
    85,890,533.48x = 128,956,869.12 × 61,616,227.68
  4. Step 4: Simplify right side
    85,890,533.48x = 7,945,835,808,597,881
  5. Step 5: Solve for x
    x = 7,945,835,808,597,881/85,890,533.48
  6. Step 6: Final answer
    x = 92,511,194.04

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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.