Home / 78,537.69-108,378.85-42,727.84

Finding the Fourth Proportional to 78,537.69, 108,378.85 and 42,727.84

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Solution

The fourth proportional to 78,537.69, 108,378.85 and 42,727.84 is: 58,962.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,537.69 : 108,378.85 = 42,727.84 : x
  2. Step 2: Convert to fraction form
    78,537.69/108,378.85 = 42,727.84/x
  3. Step 3: Cross multiply
    78,537.69x = 108,378.85 × 42,727.84
  4. Step 4: Simplify right side
    78,537.69x = 4,630,794,162.18
  5. Step 5: Solve for x
    x = 4,630,794,162.18/78,537.69
  6. Step 6: Final answer
    x = 58,962.70

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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.