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Finding the Fourth Proportional to 66,087.31, 91,205 and 37,407.01

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Solution

The fourth proportional to 66,087.31, 91,205 and 37,407.01 is: 51,624.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,087.31 : 91,205 = 37,407.01 : x
  2. Step 2: Convert to fraction form
    66,087.31/91,205 = 37,407.01/x
  3. Step 3: Cross multiply
    66,087.31x = 91,205 × 37,407.01
  4. Step 4: Simplify right side
    66,087.31x = 3,411,706,347.05
  5. Step 5: Solve for x
    x = 3,411,706,347.05/66,087.31
  6. Step 6: Final answer
    x = 51,624.23

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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.