Home / 85,490.49-118,009.80-76,522.17

Finding the Fourth Proportional to 85,490.49, 118,009.80 and 76,522.17

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Solution

The fourth proportional to 85,490.49, 118,009.80 and 76,522.17 is: 105,630.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,490.49 : 118,009.80 = 76,522.17 : x
  2. Step 2: Convert to fraction form
    85,490.49/118,009.80 = 76,522.17/x
  3. Step 3: Cross multiply
    85,490.49x = 118,009.80 × 76,522.17
  4. Step 4: Simplify right side
    85,490.49x = 9,030,365,977.27
  5. Step 5: Solve for x
    x = 9,030,365,977.27/85,490.49
  6. Step 6: Final answer
    x = 105,630.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.