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Finding the Fourth Proportional to 79,792,362.60, 119,688,543.90 and 28,679,548.20

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Solution

The fourth proportional to 79,792,362.60, 119,688,543.90 and 28,679,548.20 is: 43,019,322.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,792,362.60 : 119,688,543.90 = 28,679,548.20 : x
  2. Step 2: Convert to fraction form
    79,792,362.60/119,688,543.90 = 28,679,548.20/x
  3. Step 3: Cross multiply
    79,792,362.60x = 119,688,543.90 × 28,679,548.20
  4. Step 4: Simplify right side
    79,792,362.60x = 3,432,613,363,767,866
  5. Step 5: Solve for x
    x = 3,432,613,363,767,866/79,792,362.60
  6. Step 6: Final answer
    x = 43,019,322.30

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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.