Home / 91,675.20-126,520.74-51,389.04

Finding the Fourth Proportional to 91,675.20, 126,520.74 and 51,389.04

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Solution

The fourth proportional to 91,675.20, 126,520.74 and 51,389.04 is: 70,921.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,675.20 : 126,520.74 = 51,389.04 : x
  2. Step 2: Convert to fraction form
    91,675.20/126,520.74 = 51,389.04/x
  3. Step 3: Cross multiply
    91,675.20x = 126,520.74 × 51,389.04
  4. Step 4: Simplify right side
    91,675.20x = 6,501,779,368.69
  5. Step 5: Solve for x
    x = 6,501,779,368.69/91,675.20
  6. Step 6: Final answer
    x = 70,921.90

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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.