Home / 60,780.12-91,210.89-21,337.32

Finding the Fourth Proportional to 60,780.12, 91,210.89 and 21,337.32

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Solution

The fourth proportional to 60,780.12, 91,210.89 and 21,337.32 is: 32,020.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,780.12 : 91,210.89 = 21,337.32 : x
  2. Step 2: Convert to fraction form
    60,780.12/91,210.89 = 21,337.32/x
  3. Step 3: Cross multiply
    60,780.12x = 91,210.89 × 21,337.32
  4. Step 4: Simplify right side
    60,780.12x = 1,946,195,947.41
  5. Step 5: Solve for x
    x = 1,946,195,947.41/60,780.12
  6. Step 6: Final answer
    x = 32,020.27

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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.