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Finding the Fourth Proportional to 79,792,273.60, 119,688,410.40 and 28,679,459.20

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Solution

The fourth proportional to 79,792,273.60, 119,688,410.40 and 28,679,459.20 is: 43,019,188.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,792,273.60 : 119,688,410.40 = 28,679,459.20 : x
  2. Step 2: Convert to fraction form
    79,792,273.60/119,688,410.40 = 28,679,459.20/x
  3. Step 3: Cross multiply
    79,792,273.60x = 119,688,410.40 × 28,679,459.20
  4. Step 4: Simplify right side
    79,792,273.60x = 3,432,598,882,779,656
  5. Step 5: Solve for x
    x = 3,432,598,882,779,656/79,792,273.60
  6. Step 6: Final answer
    x = 43,019,188.80

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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.