Home / 72,220.41-99,599.09-48,379.28

Finding the Fourth Proportional to 72,220.41, 99,599.09 and 48,379.28

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Solution

The fourth proportional to 72,220.41, 99,599.09 and 48,379.28 is: 66,719.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,220.41 : 99,599.09 = 48,379.28 : x
  2. Step 2: Convert to fraction form
    72,220.41/99,599.09 = 48,379.28/x
  3. Step 3: Cross multiply
    72,220.41x = 99,599.09 × 48,379.28
  4. Step 4: Simplify right side
    72,220.41x = 4,818,531,522.96
  5. Step 5: Solve for x
    x = 4,818,531,522.96/72,220.41
  6. Step 6: Final answer
    x = 66,719.80

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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.