Home / 65,454.84-90,331.20-38,613.06

Finding the Fourth Proportional to 65,454.84, 90,331.20 and 38,613.06

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Solution

The fourth proportional to 65,454.84, 90,331.20 and 38,613.06 is: 53,288.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,454.84 : 90,331.20 = 38,613.06 : x
  2. Step 2: Convert to fraction form
    65,454.84/90,331.20 = 38,613.06/x
  3. Step 3: Cross multiply
    65,454.84x = 90,331.20 × 38,613.06
  4. Step 4: Simplify right side
    65,454.84x = 3,487,964,045.47
  5. Step 5: Solve for x
    x = 3,487,964,045.47/65,454.84
  6. Step 6: Final answer
    x = 53,288.10

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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.