Home / 86,320.10-129,480.42-23,990.60

Finding the Fourth Proportional to 86,320.10, 129,480.42 and 23,990.60

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Solution

The fourth proportional to 86,320.10, 129,480.42 and 23,990.60 is: 35,985.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,320.10 : 129,480.42 = 23,990.60 : x
  2. Step 2: Convert to fraction form
    86,320.10/129,480.42 = 23,990.60/x
  3. Step 3: Cross multiply
    86,320.10x = 129,480.42 × 23,990.60
  4. Step 4: Simplify right side
    86,320.10x = 3,106,312,964.05
  5. Step 5: Solve for x
    x = 3,106,312,964.05/86,320.10
  6. Step 6: Final answer
    x = 35,985.98

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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.