Home / 81,433,871.16-112,341,284.62-72,150,916.44

Finding the Fourth Proportional to 81,433,871.16, 112,341,284.62 and 72,150,916.44

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Solution

The fourth proportional to 81,433,871.16, 112,341,284.62 and 72,150,916.44 is: 99,535,077.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,433,871.16 : 112,341,284.62 = 72,150,916.44 : x
  2. Step 2: Convert to fraction form
    81,433,871.16/112,341,284.62 = 72,150,916.44/x
  3. Step 3: Cross multiply
    81,433,871.16x = 112,341,284.62 × 72,150,916.44
  4. Step 4: Simplify right side
    81,433,871.16x = 8,105,526,639,379,877
  5. Step 5: Solve for x
    x = 8,105,526,639,379,877/81,433,871.16
  6. Step 6: Final answer
    x = 99,535,077.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.