Home / 71,920.48-99,246.14-40,088.28

Finding the Fourth Proportional to 71,920.48, 99,246.14 and 40,088.28

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Solution

The fourth proportional to 71,920.48, 99,246.14 and 40,088.28 is: 55,319.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,920.48 : 99,246.14 = 40,088.28 : x
  2. Step 2: Convert to fraction form
    71,920.48/99,246.14 = 40,088.28/x
  3. Step 3: Cross multiply
    71,920.48x = 99,246.14 × 40,088.28
  4. Step 4: Simplify right side
    71,920.48x = 3,978,607,049.24
  5. Step 5: Solve for x
    x = 3,978,607,049.24/71,920.48
  6. Step 6: Final answer
    x = 55,319.53

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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.