Home / 66,142.56-91,258.20-62,818.32

Finding the Fourth Proportional to 66,142.56, 91,258.20 and 62,818.32

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Solution

The fourth proportional to 66,142.56, 91,258.20 and 62,818.32 is: 86,671.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,142.56 : 91,258.20 = 62,818.32 : x
  2. Step 2: Convert to fraction form
    66,142.56/91,258.20 = 62,818.32/x
  3. Step 3: Cross multiply
    66,142.56x = 91,258.20 × 62,818.32
  4. Step 4: Simplify right side
    66,142.56x = 5,732,686,810.22
  5. Step 5: Solve for x
    x = 5,732,686,810.22/66,142.56
  6. Step 6: Final answer
    x = 86,671.68

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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.