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Finding the Fourth Proportional to 53,358.21, 80,041.86 and 15,915.87

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Solution

The fourth proportional to 53,358.21, 80,041.86 and 15,915.87 is: 23,875.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,358.21 : 80,041.86 = 15,915.87 : x
  2. Step 2: Convert to fraction form
    53,358.21/80,041.86 = 15,915.87/x
  3. Step 3: Cross multiply
    53,358.21x = 80,041.86 × 15,915.87
  4. Step 4: Simplify right side
    53,358.21x = 1,273,935,838.32
  5. Step 5: Solve for x
    x = 1,273,935,838.32/53,358.21
  6. Step 6: Final answer
    x = 23,875.16

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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.