Home / 72,980,781.60-100,713,517.86-39,941,011.40

Finding the Fourth Proportional to 72,980,781.60, 100,713,517.86 and 39,941,011.40

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Solution

The fourth proportional to 72,980,781.60, 100,713,517.86 and 39,941,011.40 is: 55,118,617.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,980,781.60 : 100,713,517.86 = 39,941,011.40 : x
  2. Step 2: Convert to fraction form
    72,980,781.60/100,713,517.86 = 39,941,011.40/x
  3. Step 3: Cross multiply
    72,980,781.60x = 100,713,517.86 × 39,941,011.40
  4. Step 4: Simplify right side
    72,980,781.60x = 4,022,599,764,980,363.50
  5. Step 5: Solve for x
    x = 4,022,599,764,980,363.50/72,980,781.60
  6. Step 6: Final answer
    x = 55,118,617.21

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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.