Home / 72,247.80-99,702.24-40,416.72

Finding the Fourth Proportional to 72,247.80, 99,702.24 and 40,416.72

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Solution

The fourth proportional to 72,247.80, 99,702.24 and 40,416.72 is: 55,775.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,247.80 : 99,702.24 = 40,416.72 : x
  2. Step 2: Convert to fraction form
    72,247.80/99,702.24 = 40,416.72/x
  3. Step 3: Cross multiply
    72,247.80x = 99,702.24 × 40,416.72
  4. Step 4: Simplify right side
    72,247.80x = 4,029,637,517.45
  5. Step 5: Solve for x
    x = 4,029,637,517.45/72,247.80
  6. Step 6: Final answer
    x = 55,775.23

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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.