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Finding the Fourth Proportional to 86,998.32, 130,549.32 and 31,598.64

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Solution

The fourth proportional to 86,998.32, 130,549.32 and 31,598.64 is: 47,416.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,998.32 : 130,549.32 = 31,598.64 : x
  2. Step 2: Convert to fraction form
    86,998.32/130,549.32 = 31,598.64/x
  3. Step 3: Cross multiply
    86,998.32x = 130,549.32 × 31,598.64
  4. Step 4: Simplify right side
    86,998.32x = 4,125,180,964.92
  5. Step 5: Solve for x
    x = 4,125,180,964.92/86,998.32
  6. Step 6: Final answer
    x = 47,416.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.