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Finding the Fourth Proportional to 71,164,821.03, 98,207,683.10 and 39,803,407.75

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Solution

The fourth proportional to 71,164,821.03, 98,207,683.10 and 39,803,407.75 is: 54,928,831.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,164,821.03 : 98,207,683.10 = 39,803,407.75 : x
  2. Step 2: Convert to fraction form
    71,164,821.03/98,207,683.10 = 39,803,407.75/x
  3. Step 3: Cross multiply
    71,164,821.03x = 98,207,683.10 × 39,803,407.75
  4. Step 4: Simplify right side
    71,164,821.03x = 3,909,000,454,612,084
  5. Step 5: Solve for x
    x = 3,909,000,454,612,084/71,164,821.03
  6. Step 6: Final answer
    x = 54,928,831.38

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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.