Home / 83,392.16-115,070.64-66,439.40

Finding the Fourth Proportional to 83,392.16, 115,070.64 and 66,439.40

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Solution

The fourth proportional to 83,392.16, 115,070.64 and 66,439.40 is: 91,677.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,392.16 : 115,070.64 = 66,439.40 : x
  2. Step 2: Convert to fraction form
    83,392.16/115,070.64 = 66,439.40/x
  3. Step 3: Cross multiply
    83,392.16x = 115,070.64 × 66,439.40
  4. Step 4: Simplify right side
    83,392.16x = 7,645,224,279.22
  5. Step 5: Solve for x
    x = 7,645,224,279.22/83,392.16
  6. Step 6: Final answer
    x = 91,677.97

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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.