Home / 83,935.53-115,751.18-64,784.70

Finding the Fourth Proportional to 83,935.53, 115,751.18 and 64,784.70

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Solution

The fourth proportional to 83,935.53, 115,751.18 and 64,784.70 is: 89,341.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,935.53 : 115,751.18 = 64,784.70 : x
  2. Step 2: Convert to fraction form
    83,935.53/115,751.18 = 64,784.70/x
  3. Step 3: Cross multiply
    83,935.53x = 115,751.18 × 64,784.70
  4. Step 4: Simplify right side
    83,935.53x = 7,498,905,147.02
  5. Step 5: Solve for x
    x = 7,498,905,147.02/83,935.53
  6. Step 6: Final answer
    x = 89,341.25

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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.