Home / 91,929.68-126,911.40-61,873.04

Finding the Fourth Proportional to 91,929.68, 126,911.40 and 61,873.04

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Solution

The fourth proportional to 91,929.68, 126,911.40 and 61,873.04 is: 85,417.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,929.68 : 126,911.40 = 61,873.04 : x
  2. Step 2: Convert to fraction form
    91,929.68/126,911.40 = 61,873.04/x
  3. Step 3: Cross multiply
    91,929.68x = 126,911.40 × 61,873.04
  4. Step 4: Simplify right side
    91,929.68x = 7,852,394,128.66
  5. Step 5: Solve for x
    x = 7,852,394,128.66/91,929.68
  6. Step 6: Final answer
    x = 85,417.40

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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.