Home / 66,055.69-91,156.61-39,220.25

Finding the Fourth Proportional to 66,055.69, 91,156.61 and 39,220.25

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Solution

The fourth proportional to 66,055.69, 91,156.61 and 39,220.25 is: 54,123.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,055.69 : 91,156.61 = 39,220.25 : x
  2. Step 2: Convert to fraction form
    66,055.69/91,156.61 = 39,220.25/x
  3. Step 3: Cross multiply
    66,055.69x = 91,156.61 × 39,220.25
  4. Step 4: Simplify right side
    66,055.69x = 3,575,184,837.25
  5. Step 5: Solve for x
    x = 3,575,184,837.25/66,055.69
  6. Step 6: Final answer
    x = 54,123.80

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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.