Home / 88,009.21-121,457.89-49,772.19

Finding the Fourth Proportional to 88,009.21, 121,457.89 and 49,772.19

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Solution

The fourth proportional to 88,009.21, 121,457.89 and 49,772.19 is: 68,688.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,009.21 : 121,457.89 = 49,772.19 : x
  2. Step 2: Convert to fraction form
    88,009.21/121,457.89 = 49,772.19/x
  3. Step 3: Cross multiply
    88,009.21x = 121,457.89 × 49,772.19
  4. Step 4: Simplify right side
    88,009.21x = 6,045,225,338.75
  5. Step 5: Solve for x
    x = 6,045,225,338.75/88,009.21
  6. Step 6: Final answer
    x = 68,688.55

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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.