Home / 65,631.20-98,519.70-40,699.40

Finding the Fourth Proportional to 65,631.20, 98,519.70 and 40,699.40

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Solution

The fourth proportional to 65,631.20, 98,519.70 and 40,699.40 is: 61,094.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,631.20 : 98,519.70 = 40,699.40 : x
  2. Step 2: Convert to fraction form
    65,631.20/98,519.70 = 40,699.40/x
  3. Step 3: Cross multiply
    65,631.20x = 98,519.70 × 40,699.40
  4. Step 4: Simplify right side
    65,631.20x = 4,009,692,678.18
  5. Step 5: Solve for x
    x = 4,009,692,678.18/65,631.20
  6. Step 6: Final answer
    x = 61,094.31

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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.