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Finding the Fourth Proportional to 66,460.66, 91,721.15 and 37,789.32

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Solution

The fourth proportional to 66,460.66, 91,721.15 and 37,789.32 is: 52,152.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,460.66 : 91,721.15 = 37,789.32 : x
  2. Step 2: Convert to fraction form
    66,460.66/91,721.15 = 37,789.32/x
  3. Step 3: Cross multiply
    66,460.66x = 91,721.15 × 37,789.32
  4. Step 4: Simplify right side
    66,460.66x = 3,466,079,888.12
  5. Step 5: Solve for x
    x = 3,466,079,888.12/66,460.66
  6. Step 6: Final answer
    x = 52,152.35

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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.