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Finding the Fourth Proportional to 40,893.30, 61,315.65 and 21,210.30

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Solution

The fourth proportional to 40,893.30, 61,315.65 and 21,210.30 is: 31,802.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,893.30 : 61,315.65 = 21,210.30 : x
  2. Step 2: Convert to fraction form
    40,893.30/61,315.65 = 21,210.30/x
  3. Step 3: Cross multiply
    40,893.30x = 61,315.65 × 21,210.30
  4. Step 4: Simplify right side
    40,893.30x = 1,300,523,331.20
  5. Step 5: Solve for x
    x = 1,300,523,331.20/40,893.30
  6. Step 6: Final answer
    x = 31,802.85

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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.