Home / 61,781.63-85,267.75-39,122.69

Finding the Fourth Proportional to 61,781.63, 85,267.75 and 39,122.69

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Solution

The fourth proportional to 61,781.63, 85,267.75 and 39,122.69 is: 53,995.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,781.63 : 85,267.75 = 39,122.69 : x
  2. Step 2: Convert to fraction form
    61,781.63/85,267.75 = 39,122.69/x
  3. Step 3: Cross multiply
    61,781.63x = 85,267.75 × 39,122.69
  4. Step 4: Simplify right side
    61,781.63x = 3,335,903,323.91
  5. Step 5: Solve for x
    x = 3,335,903,323.91/61,781.63
  6. Step 6: Final answer
    x = 53,995.07

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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.