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Finding the Fourth Proportional to 86,032.40, 129,048.60 and 80,848.40

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Solution

The fourth proportional to 86,032.40, 129,048.60 and 80,848.40 is: 121,272.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,032.40 : 129,048.60 = 80,848.40 : x
  2. Step 2: Convert to fraction form
    86,032.40/129,048.60 = 80,848.40/x
  3. Step 3: Cross multiply
    86,032.40x = 129,048.60 × 80,848.40
  4. Step 4: Simplify right side
    86,032.40x = 10,433,372,832.24
  5. Step 5: Solve for x
    x = 10,433,372,832.24/86,032.40
  6. Step 6: Final answer
    x = 121,272.60

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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.