Home / 91,064.64-136,596.96-28,740

Finding the Fourth Proportional to 91,064.64, 136,596.96 and 28,740

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Solution

The fourth proportional to 91,064.64, 136,596.96 and 28,740 is: 43,110.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,064.64 : 136,596.96 = 28,740 : x
  2. Step 2: Convert to fraction form
    91,064.64/136,596.96 = 28,740/x
  3. Step 3: Cross multiply
    91,064.64x = 136,596.96 × 28,740
  4. Step 4: Simplify right side
    91,064.64x = 3,925,796,630.40
  5. Step 5: Solve for x
    x = 3,925,796,630.40/91,064.64
  6. Step 6: Final answer
    x = 43,110.00

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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.