Home / 85,109.61-127,585.02-28,911.27

Finding the Fourth Proportional to 85,109.61, 127,585.02 and 28,911.27

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Solution

The fourth proportional to 85,109.61, 127,585.02 and 28,911.27 is: 43,339.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,109.61 : 127,585.02 = 28,911.27 : x
  2. Step 2: Convert to fraction form
    85,109.61/127,585.02 = 28,911.27/x
  3. Step 3: Cross multiply
    85,109.61x = 127,585.02 × 28,911.27
  4. Step 4: Simplify right side
    85,109.61x = 3,688,644,961.18
  5. Step 5: Solve for x
    x = 3,688,644,961.18/85,109.61
  6. Step 6: Final answer
    x = 43,339.93

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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.