Home / 91,003.28-136,457.40-28,657.04

Finding the Fourth Proportional to 91,003.28, 136,457.40 and 28,657.04

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Solution

The fourth proportional to 91,003.28, 136,457.40 and 28,657.04 is: 42,970.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,003.28 : 136,457.40 = 28,657.04 : x
  2. Step 2: Convert to fraction form
    91,003.28/136,457.40 = 28,657.04/x
  3. Step 3: Cross multiply
    91,003.28x = 136,457.40 × 28,657.04
  4. Step 4: Simplify right side
    91,003.28x = 3,910,465,170.10
  5. Step 5: Solve for x
    x = 3,910,465,170.10/91,003.28
  6. Step 6: Final answer
    x = 42,970.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.