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Finding the Fourth Proportional to 58,660.32, 88,005.60 and 20,719.20

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Solution

The fourth proportional to 58,660.32, 88,005.60 and 20,719.20 is: 31,084.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,660.32 : 88,005.60 = 20,719.20 : x
  2. Step 2: Convert to fraction form
    58,660.32/88,005.60 = 20,719.20/x
  3. Step 3: Cross multiply
    58,660.32x = 88,005.60 × 20,719.20
  4. Step 4: Simplify right side
    58,660.32x = 1,823,405,627.52
  5. Step 5: Solve for x
    x = 1,823,405,627.52/58,660.32
  6. Step 6: Final answer
    x = 31,084.14

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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.