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Finding the Fourth Proportional to 87,602.40, 120,903.84 and 49,880.16

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Solution

The fourth proportional to 87,602.40, 120,903.84 and 49,880.16 is: 68,841.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,602.40 : 120,903.84 = 49,880.16 : x
  2. Step 2: Convert to fraction form
    87,602.40/120,903.84 = 49,880.16/x
  3. Step 3: Cross multiply
    87,602.40x = 120,903.84 × 49,880.16
  4. Step 4: Simplify right side
    87,602.40x = 6,030,702,883.81
  5. Step 5: Solve for x
    x = 6,030,702,883.81/87,602.40
  6. Step 6: Final answer
    x = 68,841.75

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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.