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Finding the Fourth Proportional to 60,657.36, 90,967.68 and 21,207.12

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Solution

The fourth proportional to 60,657.36, 90,967.68 and 21,207.12 is: 31,804.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,657.36 : 90,967.68 = 21,207.12 : x
  2. Step 2: Convert to fraction form
    60,657.36/90,967.68 = 21,207.12/x
  3. Step 3: Cross multiply
    60,657.36x = 90,967.68 × 21,207.12
  4. Step 4: Simplify right side
    60,657.36x = 1,929,162,505.88
  5. Step 5: Solve for x
    x = 1,929,162,505.88/60,657.36
  6. Step 6: Final answer
    x = 31,804.26

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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.