Home / 90,107.10-124,342.76-49,818.51

Finding the Fourth Proportional to 90,107.10, 124,342.76 and 49,818.51

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Solution

The fourth proportional to 90,107.10, 124,342.76 and 49,818.51 is: 68,746.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,107.10 : 124,342.76 = 49,818.51 : x
  2. Step 2: Convert to fraction form
    90,107.10/124,342.76 = 49,818.51/x
  3. Step 3: Cross multiply
    90,107.10x = 124,342.76 × 49,818.51
  4. Step 4: Simplify right side
    90,107.10x = 6,194,570,783.40
  5. Step 5: Solve for x
    x = 6,194,570,783.40/90,107.10
  6. Step 6: Final answer
    x = 68,746.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.