Home / 85,643,843.12-128,445,195.18-39,541,416.86

Finding the Fourth Proportional to 85,643,843.12, 128,445,195.18 and 39,541,416.86

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Solution

The fourth proportional to 85,643,843.12, 128,445,195.18 and 39,541,416.86 is: 59,302,628.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,643,843.12 : 128,445,195.18 = 39,541,416.86 : x
  2. Step 2: Convert to fraction form
    85,643,843.12/128,445,195.18 = 39,541,416.86/x
  3. Step 3: Cross multiply
    85,643,843.12x = 128,445,195.18 × 39,541,416.86
  4. Step 4: Simplify right side
    85,643,843.12x = 5,078,905,006,276,443
  5. Step 5: Solve for x
    x = 5,078,905,006,276,443/85,643,843.12
  6. Step 6: Final answer
    x = 59,302,628.43

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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.