Home / 65,810.24-90,815.52-40,312.64

Finding the Fourth Proportional to 65,810.24, 90,815.52 and 40,312.64

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Solution

The fourth proportional to 65,810.24, 90,815.52 and 40,312.64 is: 55,629.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,810.24 : 90,815.52 = 40,312.64 : x
  2. Step 2: Convert to fraction form
    65,810.24/90,815.52 = 40,312.64/x
  3. Step 3: Cross multiply
    65,810.24x = 90,815.52 × 40,312.64
  4. Step 4: Simplify right side
    65,810.24x = 3,661,013,364.17
  5. Step 5: Solve for x
    x = 3,661,013,364.17/65,810.24
  6. Step 6: Final answer
    x = 55,629.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.