Home / 60,909.07-91,373.45-18,779.30

Finding the Fourth Proportional to 60,909.07, 91,373.45 and 18,779.30

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Solution

The fourth proportional to 60,909.07, 91,373.45 and 18,779.30 is: 28,171.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,909.07 : 91,373.45 = 18,779.30 : x
  2. Step 2: Convert to fraction form
    60,909.07/91,373.45 = 18,779.30/x
  3. Step 3: Cross multiply
    60,909.07x = 91,373.45 × 18,779.30
  4. Step 4: Simplify right side
    60,909.07x = 1,715,929,019.67
  5. Step 5: Solve for x
    x = 1,715,929,019.67/60,909.07
  6. Step 6: Final answer
    x = 28,171.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.