Home / 40,045.68-55,321.65-31,603.86

Finding the Fourth Proportional to 40,045.68, 55,321.65 and 31,603.86

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Solution

The fourth proportional to 40,045.68, 55,321.65 and 31,603.86 is: 43,659.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,045.68 : 55,321.65 = 31,603.86 : x
  2. Step 2: Convert to fraction form
    40,045.68/55,321.65 = 31,603.86/x
  3. Step 3: Cross multiply
    40,045.68x = 55,321.65 × 31,603.86
  4. Step 4: Simplify right side
    40,045.68x = 1,748,377,681.57
  5. Step 5: Solve for x
    x = 1,748,377,681.57/40,045.68
  6. Step 6: Final answer
    x = 43,659.58

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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.