Home / 83,385.86-115,071.65-45,144.40

Finding the Fourth Proportional to 83,385.86, 115,071.65 and 45,144.40

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Solution

The fourth proportional to 83,385.86, 115,071.65 and 45,144.40 is: 62,298.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,385.86 : 115,071.65 = 45,144.40 : x
  2. Step 2: Convert to fraction form
    83,385.86/115,071.65 = 45,144.40/x
  3. Step 3: Cross multiply
    83,385.86x = 115,071.65 × 45,144.40
  4. Step 4: Simplify right side
    83,385.86x = 5,194,840,017.30
  5. Step 5: Solve for x
    x = 5,194,840,017.30/83,385.86
  6. Step 6: Final answer
    x = 62,298.81

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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.