Home / 65,400.12-90,228.96-42,752.16

Finding the Fourth Proportional to 65,400.12, 90,228.96 and 42,752.16

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Solution

The fourth proportional to 65,400.12, 90,228.96 and 42,752.16 is: 58,982.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,400.12 : 90,228.96 = 42,752.16 : x
  2. Step 2: Convert to fraction form
    65,400.12/90,228.96 = 42,752.16/x
  3. Step 3: Cross multiply
    65,400.12x = 90,228.96 × 42,752.16
  4. Step 4: Simplify right side
    65,400.12x = 3,857,482,934.55
  5. Step 5: Solve for x
    x = 3,857,482,934.55/65,400.12
  6. Step 6: Final answer
    x = 58,982.81

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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.