Home / 56,628.25-78,147.04-31,135.05

Finding the Fourth Proportional to 56,628.25, 78,147.04 and 31,135.05

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Solution

The fourth proportional to 56,628.25, 78,147.04 and 31,135.05 is: 42,966.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,628.25 : 78,147.04 = 31,135.05 : x
  2. Step 2: Convert to fraction form
    56,628.25/78,147.04 = 31,135.05/x
  3. Step 3: Cross multiply
    56,628.25x = 78,147.04 × 31,135.05
  4. Step 4: Simplify right side
    56,628.25x = 2,433,111,997.75
  5. Step 5: Solve for x
    x = 2,433,111,997.75/56,628.25
  6. Step 6: Final answer
    x = 42,966.40

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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.