Home / 83,839.95-115,640.51-56,935.71

Finding the Fourth Proportional to 83,839.95, 115,640.51 and 56,935.71

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Solution

The fourth proportional to 83,839.95, 115,640.51 and 56,935.71 is: 78,531.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,839.95 : 115,640.51 = 56,935.71 : x
  2. Step 2: Convert to fraction form
    83,839.95/115,640.51 = 56,935.71/x
  3. Step 3: Cross multiply
    83,839.95x = 115,640.51 × 56,935.71
  4. Step 4: Simplify right side
    83,839.95x = 6,584,074,256.93
  5. Step 5: Solve for x
    x = 6,584,074,256.93/83,839.95
  6. Step 6: Final answer
    x = 78,531.47

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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.