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Finding the Fourth Proportional to 81,980,237.40, 122,952,641.40 and 35,922,017.40

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Solution

The fourth proportional to 81,980,237.40, 122,952,641.40 and 35,922,017.40 is: 53,875,263.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,980,237.40 : 122,952,641.40 = 35,922,017.40 : x
  2. Step 2: Convert to fraction form
    81,980,237.40/122,952,641.40 = 35,922,017.40/x
  3. Step 3: Cross multiply
    81,980,237.40x = 122,952,641.40 × 35,922,017.40
  4. Step 4: Simplify right side
    81,980,237.40x = 4,416,706,923,746,760.50
  5. Step 5: Solve for x
    x = 4,416,706,923,746,760.50/81,980,237.40
  6. Step 6: Final answer
    x = 53,875,263.89

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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.