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Finding the Fourth Proportional to 31,071.86, 46,373.05 and 28,965.05

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Solution

The fourth proportional to 31,071.86, 46,373.05 and 28,965.05 is: 43,228.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,071.86 : 46,373.05 = 28,965.05 : x
  2. Step 2: Convert to fraction form
    31,071.86/46,373.05 = 28,965.05/x
  3. Step 3: Cross multiply
    31,071.86x = 46,373.05 × 28,965.05
  4. Step 4: Simplify right side
    31,071.86x = 1,343,197,711.90
  5. Step 5: Solve for x
    x = 1,343,197,711.90/31,071.86
  6. Step 6: Final answer
    x = 43,228.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.