Home / 57,145.30-78,859.65-31,995.70

Finding the Fourth Proportional to 57,145.30, 78,859.65 and 31,995.70

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Solution

The fourth proportional to 57,145.30, 78,859.65 and 31,995.70 is: 44,153.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,145.30 : 78,859.65 = 31,995.70 : x
  2. Step 2: Convert to fraction form
    57,145.30/78,859.65 = 31,995.70/x
  3. Step 3: Cross multiply
    57,145.30x = 78,859.65 × 31,995.70
  4. Step 4: Simplify right side
    57,145.30x = 2,523,169,703.51
  5. Step 5: Solve for x
    x = 2,523,169,703.51/57,145.30
  6. Step 6: Final answer
    x = 44,153.58

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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.