Home / 81,433,868.16-112,341,280.48-72,150,913.44

Finding the Fourth Proportional to 81,433,868.16, 112,341,280.48 and 72,150,913.44

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Solution

The fourth proportional to 81,433,868.16, 112,341,280.48 and 72,150,913.44 is: 99,535,072.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,433,868.16 : 112,341,280.48 = 72,150,913.44 : x
  2. Step 2: Convert to fraction form
    81,433,868.16/112,341,280.48 = 72,150,913.44/x
  3. Step 3: Cross multiply
    81,433,868.16x = 112,341,280.48 × 72,150,913.44
  4. Step 4: Simplify right side
    81,433,868.16x = 8,105,526,003,651,242
  5. Step 5: Solve for x
    x = 8,105,526,003,651,242/81,433,868.16
  6. Step 6: Final answer
    x = 99,535,072.90

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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.