Home / 72,968,705.20-100,697,991.24-39,931,824.88

Finding the Fourth Proportional to 72,968,705.20, 100,697,991.24 and 39,931,824.88

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Solution

The fourth proportional to 72,968,705.20, 100,697,991.24 and 39,931,824.88 is: 55,106,563.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,968,705.20 : 100,697,991.24 = 39,931,824.88 : x
  2. Step 2: Convert to fraction form
    72,968,705.20/100,697,991.24 = 39,931,824.88/x
  3. Step 3: Cross multiply
    72,968,705.20x = 100,697,991.24 × 39,931,824.88
  4. Step 4: Simplify right side
    72,968,705.20x = 4,021,054,551,963,454
  5. Step 5: Solve for x
    x = 4,021,054,551,963,454/72,968,705.20
  6. Step 6: Final answer
    x = 55,106,563.03

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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.