Home / 56,305.71-77,704.25-31,155.21

Finding the Fourth Proportional to 56,305.71, 77,704.25 and 31,155.21

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Solution

The fourth proportional to 56,305.71, 77,704.25 and 31,155.21 is: 42,995.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,305.71 : 77,704.25 = 31,155.21 : x
  2. Step 2: Convert to fraction form
    56,305.71/77,704.25 = 31,155.21/x
  3. Step 3: Cross multiply
    56,305.71x = 77,704.25 × 31,155.21
  4. Step 4: Simplify right side
    56,305.71x = 2,420,892,070.87
  5. Step 5: Solve for x
    x = 2,420,892,070.87/56,305.71
  6. Step 6: Final answer
    x = 42,995.50

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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.