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Finding the Fourth Proportional to 86,965, 130,445.64 and 23,785.12

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Solution

The fourth proportional to 86,965, 130,445.64 and 23,785.12 is: 35,677.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,965 : 130,445.64 = 23,785.12 : x
  2. Step 2: Convert to fraction form
    86,965/130,445.64 = 23,785.12/x
  3. Step 3: Cross multiply
    86,965x = 130,445.64 × 23,785.12
  4. Step 4: Simplify right side
    86,965x = 3,102,665,200.88
  5. Step 5: Solve for x
    x = 3,102,665,200.88/86,965
  6. Step 6: Final answer
    x = 35,677.17

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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.