Home / 40,985.36-61,520.16-21,258.62

Finding the Fourth Proportional to 40,985.36, 61,520.16 and 21,258.62

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Solution

The fourth proportional to 40,985.36, 61,520.16 and 21,258.62 is: 31,909.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,985.36 : 61,520.16 = 21,258.62 : x
  2. Step 2: Convert to fraction form
    40,985.36/61,520.16 = 21,258.62/x
  3. Step 3: Cross multiply
    40,985.36x = 61,520.16 × 21,258.62
  4. Step 4: Simplify right side
    40,985.36x = 1,307,833,703.78
  5. Step 5: Solve for x
    x = 1,307,833,703.78/40,985.36
  6. Step 6: Final answer
    x = 31,909.78

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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.