Home / 77,809.81-116,622.45-69,875.10

Finding the Fourth Proportional to 77,809.81, 116,622.45 and 69,875.10

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Solution

The fourth proportional to 77,809.81, 116,622.45 and 69,875.10 is: 104,729.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,809.81 : 116,622.45 = 69,875.10 : x
  2. Step 2: Convert to fraction form
    77,809.81/116,622.45 = 69,875.10/x
  3. Step 3: Cross multiply
    77,809.81x = 116,622.45 × 69,875.10
  4. Step 4: Simplify right side
    77,809.81x = 8,149,005,356.00
  5. Step 5: Solve for x
    x = 8,149,005,356.00/77,809.81
  6. Step 6: Final answer
    x = 104,729.79

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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.