Home / 91,140.75-125,779.10-53,427.15

Finding the Fourth Proportional to 91,140.75, 125,779.10 and 53,427.15

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Solution

The fourth proportional to 91,140.75, 125,779.10 and 53,427.15 is: 73,732.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,140.75 : 125,779.10 = 53,427.15 : x
  2. Step 2: Convert to fraction form
    91,140.75/125,779.10 = 53,427.15/x
  3. Step 3: Cross multiply
    91,140.75x = 125,779.10 × 53,427.15
  4. Step 4: Simplify right side
    91,140.75x = 6,720,018,575.43
  5. Step 5: Solve for x
    x = 6,720,018,575.43/91,140.75
  6. Step 6: Final answer
    x = 73,732.32

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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.