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Finding the Fourth Proportional to 91,070.31, 136,621.26 and 27,888.94

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Solution

The fourth proportional to 91,070.31, 136,621.26 and 27,888.94 is: 41,838.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,070.31 : 136,621.26 = 27,888.94 : x
  2. Step 2: Convert to fraction form
    91,070.31/136,621.26 = 27,888.94/x
  3. Step 3: Cross multiply
    91,070.31x = 136,621.26 × 27,888.94
  4. Step 4: Simplify right side
    91,070.31x = 3,810,222,549.81
  5. Step 5: Solve for x
    x = 3,810,222,549.81/91,070.31
  6. Step 6: Final answer
    x = 41,838.25

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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.