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Finding the Fourth Proportional to 66,047,792.80, 98,977,210.80 and 48,640,147.60

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Solution

The fourth proportional to 66,047,792.80, 98,977,210.80 and 48,640,147.60 is: 72,890,643.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,047,792.80 : 98,977,210.80 = 48,640,147.60 : x
  2. Step 2: Convert to fraction form
    66,047,792.80/98,977,210.80 = 48,640,147.60/x
  3. Step 3: Cross multiply
    66,047,792.80x = 98,977,210.80 × 48,640,147.60
  4. Step 4: Simplify right side
    66,047,792.80x = 4,814,266,142,348,314
  5. Step 5: Solve for x
    x = 4,814,266,142,348,314/66,047,792.80
  6. Step 6: Final answer
    x = 72,890,643.85

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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.