Home / 84,746.10-127,115.10-28,580.70

Finding the Fourth Proportional to 84,746.10, 127,115.10 and 28,580.70

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Solution

The fourth proportional to 84,746.10, 127,115.10 and 28,580.70 is: 42,869.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,746.10 : 127,115.10 = 28,580.70 : x
  2. Step 2: Convert to fraction form
    84,746.10/127,115.10 = 28,580.70/x
  3. Step 3: Cross multiply
    84,746.10x = 127,115.10 × 28,580.70
  4. Step 4: Simplify right side
    84,746.10x = 3,633,038,538.57
  5. Step 5: Solve for x
    x = 3,633,038,538.57/84,746.10
  6. Step 6: Final answer
    x = 42,869.68

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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.