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Finding the Fourth Proportional to 62,782.80, 86,520.96 and 61,630.08

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Solution

The fourth proportional to 62,782.80, 86,520.96 and 61,630.08 is: 84,932.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,782.80 : 86,520.96 = 61,630.08 : x
  2. Step 2: Convert to fraction form
    62,782.80/86,520.96 = 61,630.08/x
  3. Step 3: Cross multiply
    62,782.80x = 86,520.96 × 61,630.08
  4. Step 4: Simplify right side
    62,782.80x = 5,332,293,686.48
  5. Step 5: Solve for x
    x = 5,332,293,686.48/62,782.80
  6. Step 6: Final answer
    x = 84,932.40

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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.