Home / 86,111.07-129,174.02-23,781.57

Finding the Fourth Proportional to 86,111.07, 129,174.02 and 23,781.57

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Solution

The fourth proportional to 86,111.07, 129,174.02 and 23,781.57 is: 35,674.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,111.07 : 129,174.02 = 23,781.57 : x
  2. Step 2: Convert to fraction form
    86,111.07/129,174.02 = 23,781.57/x
  3. Step 3: Cross multiply
    86,111.07x = 129,174.02 × 23,781.57
  4. Step 4: Simplify right side
    86,111.07x = 3,071,960,998.81
  5. Step 5: Solve for x
    x = 3,071,960,998.81/86,111.07
  6. Step 6: Final answer
    x = 35,674.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.