Home / 72,248.32-99,706.44-40,417.75

Finding the Fourth Proportional to 72,248.32, 99,706.44 and 40,417.75

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Solution

The fourth proportional to 72,248.32, 99,706.44 and 40,417.75 is: 55,778.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,248.32 : 99,706.44 = 40,417.75 : x
  2. Step 2: Convert to fraction form
    72,248.32/99,706.44 = 40,417.75/x
  3. Step 3: Cross multiply
    72,248.32x = 99,706.44 × 40,417.75
  4. Step 4: Simplify right side
    72,248.32x = 4,029,909,965.31
  5. Step 5: Solve for x
    x = 4,029,909,965.31/72,248.32
  6. Step 6: Final answer
    x = 55,778.60

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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.