Home / 85,822,921.40-128,791,622.68-31,235,491.72

Finding the Fourth Proportional to 85,822,921.40, 128,791,622.68 and 31,235,491.72

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Solution

The fourth proportional to 85,822,921.40, 128,791,622.68 and 31,235,491.72 is: 46,874,070.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,822,921.40 : 128,791,622.68 = 31,235,491.72 : x
  2. Step 2: Convert to fraction form
    85,822,921.40/128,791,622.68 = 31,235,491.72/x
  3. Step 3: Cross multiply
    85,822,921.40x = 128,791,622.68 × 31,235,491.72
  4. Step 4: Simplify right side
    85,822,921.40x = 4,022,869,663,826,504.50
  5. Step 5: Solve for x
    x = 4,022,869,663,826,504.50/85,822,921.40
  6. Step 6: Final answer
    x = 46,874,070.45

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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.