Home / 85,517,487.70-128,276,231.55-74,755,807.45

Finding the Fourth Proportional to 85,517,487.70, 128,276,231.55 and 74,755,807.45

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Solution

The fourth proportional to 85,517,487.70, 128,276,231.55 and 74,755,807.45 is: 112,133,711.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,517,487.70 : 128,276,231.55 = 74,755,807.45 : x
  2. Step 2: Convert to fraction form
    85,517,487.70/128,276,231.55 = 74,755,807.45/x
  3. Step 3: Cross multiply
    85,517,487.70x = 128,276,231.55 × 74,755,807.45
  4. Step 4: Simplify right side
    85,517,487.70x = 9,589,393,266,163,416
  5. Step 5: Solve for x
    x = 9,589,393,266,163,416/85,517,487.70
  6. Step 6: Final answer
    x = 112,133,711.18

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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.