Home / 85,868.84-118,421.43-53,606.45

Finding the Fourth Proportional to 85,868.84, 118,421.43 and 53,606.45

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Solution

The fourth proportional to 85,868.84, 118,421.43 and 53,606.45 is: 73,928.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,868.84 : 118,421.43 = 53,606.45 : x
  2. Step 2: Convert to fraction form
    85,868.84/118,421.43 = 53,606.45/x
  3. Step 3: Cross multiply
    85,868.84x = 118,421.43 × 53,606.45
  4. Step 4: Simplify right side
    85,868.84x = 6,348,151,874.12
  5. Step 5: Solve for x
    x = 6,348,151,874.12/85,868.84
  6. Step 6: Final answer
    x = 73,928.47

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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.