Home / 81,492,543.10-122,238,814.65-20,908,269.10

Finding the Fourth Proportional to 81,492,543.10, 122,238,814.65 and 20,908,269.10

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Solution

The fourth proportional to 81,492,543.10, 122,238,814.65 and 20,908,269.10 is: 31,362,403.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,492,543.10 : 122,238,814.65 = 20,908,269.10 : x
  2. Step 2: Convert to fraction form
    81,492,543.10/122,238,814.65 = 20,908,269.10/x
  3. Step 3: Cross multiply
    81,492,543.10x = 122,238,814.65 × 20,908,269.10
  4. Step 4: Simplify right side
    81,492,543.10x = 2,555,802,031,167,222.50
  5. Step 5: Solve for x
    x = 2,555,802,031,167,222.50/81,492,543.10
  6. Step 6: Final answer
    x = 31,362,403.65

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Similar ratio
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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.