Home / 72,624,005.20-108,936,007.80-67,081,272.40

Finding the Fourth Proportional to 72,624,005.20, 108,936,007.80 and 67,081,272.40

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Solution

The fourth proportional to 72,624,005.20, 108,936,007.80 and 67,081,272.40 is: 100,621,908.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,624,005.20 : 108,936,007.80 = 67,081,272.40 : x
  2. Step 2: Convert to fraction form
    72,624,005.20/108,936,007.80 = 67,081,272.40/x
  3. Step 3: Cross multiply
    72,624,005.20x = 108,936,007.80 × 67,081,272.40
  4. Step 4: Simplify right side
    72,624,005.20x = 7,307,566,013,400,324
  5. Step 5: Solve for x
    x = 7,307,566,013,400,324/72,624,005.20
  6. Step 6: Final answer
    x = 100,621,908.60

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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.