Home / 86,520.08-129,838.04-30,360.45

Finding the Fourth Proportional to 86,520.08, 129,838.04 and 30,360.45

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Solution

The fourth proportional to 86,520.08, 129,838.04 and 30,360.45 is: 45,561.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,520.08 : 129,838.04 = 30,360.45 : x
  2. Step 2: Convert to fraction form
    86,520.08/129,838.04 = 30,360.45/x
  3. Step 3: Cross multiply
    86,520.08x = 129,838.04 × 30,360.45
  4. Step 4: Simplify right side
    86,520.08x = 3,941,941,770.46
  5. Step 5: Solve for x
    x = 3,941,941,770.46/86,520.08
  6. Step 6: Final answer
    x = 45,561.00

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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.