Home / 30,728,810.76-42,407,459.82-16,977,479.64

Finding the Fourth Proportional to 30,728,810.76, 42,407,459.82 and 16,977,479.64

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Solution

The fourth proportional to 30,728,810.76, 42,407,459.82 and 16,977,479.64 is: 23,429,861.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,728,810.76 : 42,407,459.82 = 16,977,479.64 : x
  2. Step 2: Convert to fraction form
    30,728,810.76/42,407,459.82 = 16,977,479.64/x
  3. Step 3: Cross multiply
    30,728,810.76x = 42,407,459.82 × 16,977,479.64
  4. Step 4: Simplify right side
    30,728,810.76x = 719,971,785,678,168.12
  5. Step 5: Solve for x
    x = 719,971,785,678,168.12/30,728,810.76
  6. Step 6: Final answer
    x = 23,429,861.68

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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.