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Finding the Fourth Proportional to 60,353.45, 90,538.38 and 20,913.64

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Solution

The fourth proportional to 60,353.45, 90,538.38 and 20,913.64 is: 31,373.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,353.45 : 90,538.38 = 20,913.64 : x
  2. Step 2: Convert to fraction form
    60,353.45/90,538.38 = 20,913.64/x
  3. Step 3: Cross multiply
    60,353.45x = 90,538.38 × 20,913.64
  4. Step 4: Simplify right side
    60,353.45x = 1,893,487,427.26
  5. Step 5: Solve for x
    x = 1,893,487,427.26/60,353.45
  6. Step 6: Final answer
    x = 31,373.31

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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.