Home / 85,983,489.59-128,971,631.72-27,689,877.26

Finding the Fourth Proportional to 85,983,489.59, 128,971,631.72 and 27,689,877.26

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Solution

The fourth proportional to 85,983,489.59, 128,971,631.72 and 27,689,877.26 is: 41,533,655.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,983,489.59 : 128,971,631.72 = 27,689,877.26 : x
  2. Step 2: Convert to fraction form
    85,983,489.59/128,971,631.72 = 27,689,877.26/x
  3. Step 3: Cross multiply
    85,983,489.59x = 128,971,631.72 × 27,689,877.26
  4. Step 4: Simplify right side
    85,983,489.59x = 3,571,208,652,463,912.50
  5. Step 5: Solve for x
    x = 3,571,208,652,463,912.50/85,983,489.59
  6. Step 6: Final answer
    x = 41,533,655.70

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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.