Home / 66,543,612.40-99,808,045.80-54,555,439.60

Finding the Fourth Proportional to 66,543,612.40, 99,808,045.80 and 54,555,439.60

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Solution

The fourth proportional to 66,543,612.40, 99,808,045.80 and 54,555,439.60 is: 81,827,114.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,543,612.40 : 99,808,045.80 = 54,555,439.60 : x
  2. Step 2: Convert to fraction form
    66,543,612.40/99,808,045.80 = 54,555,439.60/x
  3. Step 3: Cross multiply
    66,543,612.40x = 99,808,045.80 × 54,555,439.60
  4. Step 4: Simplify right side
    66,543,612.40x = 5,445,071,814,235,934
  5. Step 5: Solve for x
    x = 5,445,071,814,235,934/66,543,612.40
  6. Step 6: Final answer
    x = 81,827,114.85

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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.