Home / 78,547.20-108,394.08-42,736.80

Finding the Fourth Proportional to 78,547.20, 108,394.08 and 42,736.80

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Solution

The fourth proportional to 78,547.20, 108,394.08 and 42,736.80 is: 58,976.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,547.20 : 108,394.08 = 42,736.80 : x
  2. Step 2: Convert to fraction form
    78,547.20/108,394.08 = 42,736.80/x
  3. Step 3: Cross multiply
    78,547.20x = 108,394.08 × 42,736.80
  4. Step 4: Simplify right side
    78,547.20x = 4,632,416,118.14
  5. Step 5: Solve for x
    x = 4,632,416,118.14/78,547.20
  6. Step 6: Final answer
    x = 58,976.21

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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.