Home / 76,655.10-105,782.91-43,121.10

Finding the Fourth Proportional to 76,655.10, 105,782.91 and 43,121.10

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Solution

The fourth proportional to 76,655.10, 105,782.91 and 43,121.10 is: 59,506.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,655.10 : 105,782.91 = 43,121.10 : x
  2. Step 2: Convert to fraction form
    76,655.10/105,782.91 = 43,121.10/x
  3. Step 3: Cross multiply
    76,655.10x = 105,782.91 × 43,121.10
  4. Step 4: Simplify right side
    76,655.10x = 4,561,475,440.40
  5. Step 5: Solve for x
    x = 4,561,475,440.40/76,655.10
  6. Step 6: Final answer
    x = 59,506.48

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1.5x scale

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.