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Finding the Fourth Proportional to 72,612,020.80, 101,911,920.80 and 72,612,020.80

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Solution

The fourth proportional to 72,612,020.80, 101,911,920.80 and 72,612,020.80 is: 101,911,920.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,612,020.80 : 101,911,920.80 = 72,612,020.80 : x
  2. Step 2: Convert to fraction form
    72,612,020.80/101,911,920.80 = 72,612,020.80/x
  3. Step 3: Cross multiply
    72,612,020.80x = 101,911,920.80 × 72,612,020.80
  4. Step 4: Simplify right side
    72,612,020.80x = 7,400,030,512,897,552
  5. Step 5: Solve for x
    x = 7,400,030,512,897,552/72,612,020.80
  6. Step 6: Final answer
    x = 101,911,920.80

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These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.