Home / 66,215.81-91,377.51-39,007.71

Finding the Fourth Proportional to 66,215.81, 91,377.51 and 39,007.71

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Solution

The fourth proportional to 66,215.81, 91,377.51 and 39,007.71 is: 53,830.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,215.81 : 91,377.51 = 39,007.71 : x
  2. Step 2: Convert to fraction form
    66,215.81/91,377.51 = 39,007.71/x
  3. Step 3: Cross multiply
    66,215.81x = 91,377.51 × 39,007.71
  4. Step 4: Simplify right side
    66,215.81x = 3,564,427,410.60
  5. Step 5: Solve for x
    x = 3,564,427,410.60/66,215.81
  6. Step 6: Final answer
    x = 53,830.46

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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.