Home / 86,218.08-129,319.42-30,048.63

Finding the Fourth Proportional to 86,218.08, 129,319.42 and 30,048.63

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Solution

The fourth proportional to 86,218.08, 129,319.42 and 30,048.63 is: 45,070.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,218.08 : 129,319.42 = 30,048.63 : x
  2. Step 2: Convert to fraction form
    86,218.08/129,319.42 = 30,048.63/x
  3. Step 3: Cross multiply
    86,218.08x = 129,319.42 × 30,048.63
  4. Step 4: Simplify right side
    86,218.08x = 3,885,871,403.39
  5. Step 5: Solve for x
    x = 3,885,871,403.39/86,218.08
  6. Step 6: Final answer
    x = 45,070.26

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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.