Home / 78,532.30-108,374.05-42,722.45

Finding the Fourth Proportional to 78,532.30, 108,374.05 and 42,722.45

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Solution

The fourth proportional to 78,532.30, 108,374.05 and 42,722.45 is: 58,956.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,532.30 : 108,374.05 = 42,722.45 : x
  2. Step 2: Convert to fraction form
    78,532.30/108,374.05 = 42,722.45/x
  3. Step 3: Cross multiply
    78,532.30x = 108,374.05 × 42,722.45
  4. Step 4: Simplify right side
    78,532.30x = 4,630,004,850.36
  5. Step 5: Solve for x
    x = 4,630,004,850.36/78,532.30
  6. Step 6: Final answer
    x = 58,956.69

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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.