Home / 40,857.08-61,302.64-21,140.06

Finding the Fourth Proportional to 40,857.08, 61,302.64 and 21,140.06

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Solution

The fourth proportional to 40,857.08, 61,302.64 and 21,140.06 is: 31,718.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,857.08 : 61,302.64 = 21,140.06 : x
  2. Step 2: Convert to fraction form
    40,857.08/61,302.64 = 21,140.06/x
  3. Step 3: Cross multiply
    40,857.08x = 61,302.64 × 21,140.06
  4. Step 4: Simplify right side
    40,857.08x = 1,295,941,487.76
  5. Step 5: Solve for x
    x = 1,295,941,487.76/40,857.08
  6. Step 6: Final answer
    x = 31,718.90

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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.