Home / 66,055.23-91,115.90-39,179.74

Finding the Fourth Proportional to 66,055.23, 91,115.90 and 39,179.74

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Solution

The fourth proportional to 66,055.23, 91,115.90 and 39,179.74 is: 54,044.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,055.23 : 91,115.90 = 39,179.74 : x
  2. Step 2: Convert to fraction form
    66,055.23/91,115.90 = 39,179.74/x
  3. Step 3: Cross multiply
    66,055.23x = 91,115.90 × 39,179.74
  4. Step 4: Simplify right side
    66,055.23x = 3,569,897,271.87
  5. Step 5: Solve for x
    x = 3,569,897,271.87/66,055.23
  6. Step 6: Final answer
    x = 54,044.13

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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.