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Finding the Fourth Proportional to 91,327.64, 137,019.15 and 64,725.07

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Solution

The fourth proportional to 91,327.64, 137,019.15 and 64,725.07 is: 97,107.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,327.64 : 137,019.15 = 64,725.07 : x
  2. Step 2: Convert to fraction form
    91,327.64/137,019.15 = 64,725.07/x
  3. Step 3: Cross multiply
    91,327.64x = 137,019.15 × 64,725.07
  4. Step 4: Simplify right side
    91,327.64x = 8,868,574,075.09
  5. Step 5: Solve for x
    x = 8,868,574,075.09/91,327.64
  6. Step 6: Final answer
    x = 97,107.23

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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.