Home / 83,515.16-115,255.64-49,543.76

Finding the Fourth Proportional to 83,515.16, 115,255.64 and 49,543.76

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Solution

The fourth proportional to 83,515.16, 115,255.64 and 49,543.76 is: 68,373.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,515.16 : 115,255.64 = 49,543.76 : x
  2. Step 2: Convert to fraction form
    83,515.16/115,255.64 = 49,543.76/x
  3. Step 3: Cross multiply
    83,515.16x = 115,255.64 × 49,543.76
  4. Step 4: Simplify right side
    83,515.16x = 5,710,197,766.81
  5. Step 5: Solve for x
    x = 5,710,197,766.81/83,515.16
  6. Step 6: Final answer
    x = 68,373.19

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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.