Home / 72,771,110.40-108,904,723.20-66,724,492.80

Finding the Fourth Proportional to 72,771,110.40, 108,904,723.20 and 66,724,492.80

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Solution

The fourth proportional to 72,771,110.40, 108,904,723.20 and 66,724,492.80 is: 99,855,730.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,771,110.40 : 108,904,723.20 = 66,724,492.80 : x
  2. Step 2: Convert to fraction form
    72,771,110.40/108,904,723.20 = 66,724,492.80/x
  3. Step 3: Cross multiply
    72,771,110.40x = 108,904,723.20 × 66,724,492.80
  4. Step 4: Simplify right side
    72,771,110.40x = 7,266,612,419,044,393
  5. Step 5: Solve for x
    x = 7,266,612,419,044,393/72,771,110.40
  6. Step 6: Final answer
    x = 99,855,730.92

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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.