Home / 85,814,134.46-128,725,167.45-28,311,430.94

Finding the Fourth Proportional to 85,814,134.46, 128,725,167.45 and 28,311,430.94

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Solution

The fourth proportional to 85,814,134.46, 128,725,167.45 and 28,311,430.94 is: 42,468,454.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,814,134.46 : 128,725,167.45 = 28,311,430.94 : x
  2. Step 2: Convert to fraction form
    85,814,134.46/128,725,167.45 = 28,311,430.94/x
  3. Step 3: Cross multiply
    85,814,134.46x = 128,725,167.45 × 28,311,430.94
  4. Step 4: Simplify right side
    85,814,134.46x = 3,644,393,687,856,985
  5. Step 5: Solve for x
    x = 3,644,393,687,856,985/85,814,134.46
  6. Step 6: Final answer
    x = 42,468,454.77

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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.