Home / 72,039,668.47-108,102,539.67-66,178,651.03

Finding the Fourth Proportional to 72,039,668.47, 108,102,539.67 and 66,178,651.03

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Solution

The fourth proportional to 72,039,668.47, 108,102,539.67 and 66,178,651.03 is: 99,307,512.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,039,668.47 : 108,102,539.67 = 66,178,651.03 : x
  2. Step 2: Convert to fraction form
    72,039,668.47/108,102,539.67 = 66,178,651.03/x
  3. Step 3: Cross multiply
    72,039,668.47x = 108,102,539.67 × 66,178,651.03
  4. Step 4: Simplify right side
    72,039,668.47x = 7,154,080,248,277,662
  5. Step 5: Solve for x
    x = 7,154,080,248,277,662/72,039,668.47
  6. Step 6: Final answer
    x = 99,307,512.10

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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.