Home / 85,983,490.64-128,971,633.30-27,689,878.32

Finding the Fourth Proportional to 85,983,490.64, 128,971,633.30 and 27,689,878.32

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Solution

The fourth proportional to 85,983,490.64, 128,971,633.30 and 27,689,878.32 is: 41,533,657.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,983,490.64 : 128,971,633.30 = 27,689,878.32 : x
  2. Step 2: Convert to fraction form
    85,983,490.64/128,971,633.30 = 27,689,878.32/x
  3. Step 3: Cross multiply
    85,983,490.64x = 128,971,633.30 × 27,689,878.32
  4. Step 4: Simplify right side
    85,983,490.64x = 3,571,208,832,255,791.50
  5. Step 5: Solve for x
    x = 3,571,208,832,255,791.50/85,983,490.64
  6. Step 6: Final answer
    x = 41,533,657.28

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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.