Home / 71,276.48-98,348.12-48,315.40

Finding the Fourth Proportional to 71,276.48, 98,348.12 and 48,315.40

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Solution

The fourth proportional to 71,276.48, 98,348.12 and 48,315.40 is: 66,666.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,276.48 : 98,348.12 = 48,315.40 : x
  2. Step 2: Convert to fraction form
    71,276.48/98,348.12 = 48,315.40/x
  3. Step 3: Cross multiply
    71,276.48x = 98,348.12 × 48,315.40
  4. Step 4: Simplify right side
    71,276.48x = 4,751,728,757.05
  5. Step 5: Solve for x
    x = 4,751,728,757.05/71,276.48
  6. Step 6: Final answer
    x = 66,666.15

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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.