Home / 61,781.12-85,267.06-39,122.18

Finding the Fourth Proportional to 61,781.12, 85,267.06 and 39,122.18

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Solution

The fourth proportional to 61,781.12, 85,267.06 and 39,122.18 is: 53,994.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,781.12 : 85,267.06 = 39,122.18 : x
  2. Step 2: Convert to fraction form
    61,781.12/85,267.06 = 39,122.18/x
  3. Step 3: Cross multiply
    61,781.12x = 85,267.06 × 39,122.18
  4. Step 4: Simplify right side
    61,781.12x = 3,335,833,384.75
  5. Step 5: Solve for x
    x = 3,335,833,384.75/61,781.12
  6. Step 6: Final answer
    x = 53,994.38

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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.