Home / 78,311.07-108,069.35-42,501.08

Finding the Fourth Proportional to 78,311.07, 108,069.35 and 42,501.08

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Solution

The fourth proportional to 78,311.07, 108,069.35 and 42,501.08 is: 58,651.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,311.07 : 108,069.35 = 42,501.08 : x
  2. Step 2: Convert to fraction form
    78,311.07/108,069.35 = 42,501.08/x
  3. Step 3: Cross multiply
    78,311.07x = 108,069.35 × 42,501.08
  4. Step 4: Simplify right side
    78,311.07x = 4,593,063,337.05
  5. Step 5: Solve for x
    x = 4,593,063,337.05/78,311.07
  6. Step 6: Final answer
    x = 58,651.52

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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.