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Finding the Fourth Proportional to 86,856.60, 130,187.70 and 44,720.40

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Solution

The fourth proportional to 86,856.60, 130,187.70 and 44,720.40 is: 67,030.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,856.60 : 130,187.70 = 44,720.40 : x
  2. Step 2: Convert to fraction form
    86,856.60/130,187.70 = 44,720.40/x
  3. Step 3: Cross multiply
    86,856.60x = 130,187.70 × 44,720.40
  4. Step 4: Simplify right side
    86,856.60x = 5,822,046,019.08
  5. Step 5: Solve for x
    x = 5,822,046,019.08/86,856.60
  6. Step 6: Final answer
    x = 67,030.55

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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.