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Finding the Fourth Proportional to 83,434.80, 115,142.92 and 45,709.08

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Solution

The fourth proportional to 83,434.80, 115,142.92 and 45,709.08 is: 63,080.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,434.80 : 115,142.92 = 45,709.08 : x
  2. Step 2: Convert to fraction form
    83,434.80/115,142.92 = 45,709.08/x
  3. Step 3: Cross multiply
    83,434.80x = 115,142.92 × 45,709.08
  4. Step 4: Simplify right side
    83,434.80x = 5,263,076,941.71
  5. Step 5: Solve for x
    x = 5,263,076,941.71/83,434.80
  6. Step 6: Final answer
    x = 63,080.12

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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.