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Finding the Fourth Proportional to 66,459.84, 91,710.92 and 37,775.51

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Solution

The fourth proportional to 66,459.84, 91,710.92 and 37,775.51 is: 52,128.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,459.84 : 91,710.92 = 37,775.51 : x
  2. Step 2: Convert to fraction form
    66,459.84/91,710.92 = 37,775.51/x
  3. Step 3: Cross multiply
    66,459.84x = 91,710.92 × 37,775.51
  4. Step 4: Simplify right side
    66,459.84x = 3,464,426,910.41
  5. Step 5: Solve for x
    x = 3,464,426,910.41/66,459.84
  6. Step 6: Final answer
    x = 52,128.13

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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.