Home / 86,315.63-129,464.21-23,142.08

Finding the Fourth Proportional to 86,315.63, 129,464.21 and 23,142.08

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Solution

The fourth proportional to 86,315.63, 129,464.21 and 23,142.08 is: 34,710.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,315.63 : 129,464.21 = 23,142.08 : x
  2. Step 2: Convert to fraction form
    86,315.63/129,464.21 = 23,142.08/x
  3. Step 3: Cross multiply
    86,315.63x = 129,464.21 × 23,142.08
  4. Step 4: Simplify right side
    86,315.63x = 2,996,070,341.93
  5. Step 5: Solve for x
    x = 2,996,070,341.93/86,315.63
  6. Step 6: Final answer
    x = 34,710.64

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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.