Home / 78,633.16-108,518.32-59,217.31

Finding the Fourth Proportional to 78,633.16, 108,518.32 and 59,217.31

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Solution

The fourth proportional to 78,633.16, 108,518.32 and 59,217.31 is: 81,723.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,633.16 : 108,518.32 = 59,217.31 : x
  2. Step 2: Convert to fraction form
    78,633.16/108,518.32 = 59,217.31/x
  3. Step 3: Cross multiply
    78,633.16x = 108,518.32 × 59,217.31
  4. Step 4: Simplify right side
    78,633.16x = 6,426,162,996.12
  5. Step 5: Solve for x
    x = 6,426,162,996.12/78,633.16
  6. Step 6: Final answer
    x = 81,723.32

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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.