Home / 71,500,077.07-98,669,709.73-40,138,117.75

Finding the Fourth Proportional to 71,500,077.07, 98,669,709.73 and 40,138,117.75

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Solution

The fourth proportional to 71,500,077.07, 98,669,709.73 and 40,138,117.75 is: 55,390,379.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,500,077.07 : 98,669,709.73 = 40,138,117.75 : x
  2. Step 2: Convert to fraction form
    71,500,077.07/98,669,709.73 = 40,138,117.75/x
  3. Step 3: Cross multiply
    71,500,077.07x = 98,669,709.73 × 40,138,117.75
  4. Step 4: Simplify right side
    71,500,077.07x = 3,960,416,427,674,570.50
  5. Step 5: Solve for x
    x = 3,960,416,427,674,570.50/71,500,077.07
  6. Step 6: Final answer
    x = 55,390,379.84

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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.