Home / 86,243.69-129,356.45-23,070.20

Finding the Fourth Proportional to 86,243.69, 129,356.45 and 23,070.20

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Solution

The fourth proportional to 86,243.69, 129,356.45 and 23,070.20 is: 34,602.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,243.69 : 129,356.45 = 23,070.20 : x
  2. Step 2: Convert to fraction form
    86,243.69/129,356.45 = 23,070.20/x
  3. Step 3: Cross multiply
    86,243.69x = 129,356.45 × 23,070.20
  4. Step 4: Simplify right side
    86,243.69x = 2,984,278,410.66
  5. Step 5: Solve for x
    x = 2,984,278,410.66/86,243.69
  6. Step 6: Final answer
    x = 34,602.86

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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.