Home / 56,626.40-78,144.48-31,133.20

Finding the Fourth Proportional to 56,626.40, 78,144.48 and 31,133.20

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Solution

The fourth proportional to 56,626.40, 78,144.48 and 31,133.20 is: 42,963.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,626.40 : 78,144.48 = 31,133.20 : x
  2. Step 2: Convert to fraction form
    56,626.40/78,144.48 = 31,133.20/x
  3. Step 3: Cross multiply
    56,626.40x = 78,144.48 × 31,133.20
  4. Step 4: Simplify right side
    56,626.40x = 2,432,887,724.74
  5. Step 5: Solve for x
    x = 2,432,887,724.74/56,626.40
  6. Step 6: Final answer
    x = 42,963.84

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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.