Home / 91,779.64-126,640.56-54,061.36

Finding the Fourth Proportional to 91,779.64, 126,640.56 and 54,061.36

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Solution

The fourth proportional to 91,779.64, 126,640.56 and 54,061.36 is: 74,595.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,779.64 : 126,640.56 = 54,061.36 : x
  2. Step 2: Convert to fraction form
    91,779.64/126,640.56 = 54,061.36/x
  3. Step 3: Cross multiply
    91,779.64x = 126,640.56 × 54,061.36
  4. Step 4: Simplify right side
    91,779.64x = 6,846,360,904.76
  5. Step 5: Solve for x
    x = 6,846,360,904.76/91,779.64
  6. Step 6: Final answer
    x = 74,595.64

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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.