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Finding the Fourth Proportional to 91,208.80, 136,813.20 and 49,218.40

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Solution

The fourth proportional to 91,208.80, 136,813.20 and 49,218.40 is: 73,827.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,208.80 : 136,813.20 = 49,218.40 : x
  2. Step 2: Convert to fraction form
    91,208.80/136,813.20 = 49,218.40/x
  3. Step 3: Cross multiply
    91,208.80x = 136,813.20 × 49,218.40
  4. Step 4: Simplify right side
    91,208.80x = 6,733,726,802.88
  5. Step 5: Solve for x
    x = 6,733,726,802.88/91,208.80
  6. Step 6: Final answer
    x = 73,827.60

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1.5x scale

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.