Home / 66,461.08-91,705.80-39,602.92

Finding the Fourth Proportional to 66,461.08, 91,705.80 and 39,602.92

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Solution

The fourth proportional to 66,461.08, 91,705.80 and 39,602.92 is: 54,645.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,461.08 : 91,705.80 = 39,602.92 : x
  2. Step 2: Convert to fraction form
    66,461.08/91,705.80 = 39,602.92/x
  3. Step 3: Cross multiply
    66,461.08x = 91,705.80 × 39,602.92
  4. Step 4: Simplify right side
    66,461.08x = 3,631,817,460.94
  5. Step 5: Solve for x
    x = 3,631,817,460.94/66,461.08
  6. Step 6: Final answer
    x = 54,645.78

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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.