Home / 83,528.29-115,157.53-66,357.63

Finding the Fourth Proportional to 83,528.29, 115,157.53 and 66,357.63

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Solution

The fourth proportional to 83,528.29, 115,157.53 and 66,357.63 is: 91,484.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,528.29 : 115,157.53 = 66,357.63 : x
  2. Step 2: Convert to fraction form
    83,528.29/115,157.53 = 66,357.63/x
  3. Step 3: Cross multiply
    83,528.29x = 115,157.53 × 66,357.63
  4. Step 4: Simplify right side
    83,528.29x = 7,641,581,066.32
  5. Step 5: Solve for x
    x = 7,641,581,066.32/83,528.29
  6. Step 6: Final answer
    x = 91,484.94

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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.