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Finding the Fourth Proportional to 66,165.54, 91,312.53 and 37,870.58

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Solution

The fourth proportional to 66,165.54, 91,312.53 and 37,870.58 is: 52,263.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,165.54 : 91,312.53 = 37,870.58 : x
  2. Step 2: Convert to fraction form
    66,165.54/91,312.53 = 37,870.58/x
  3. Step 3: Cross multiply
    66,165.54x = 91,312.53 × 37,870.58
  4. Step 4: Simplify right side
    66,165.54x = 3,458,058,472.37
  5. Step 5: Solve for x
    x = 3,458,058,472.37/66,165.54
  6. Step 6: Final answer
    x = 52,263.74

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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.