Home / 30,085.07-45,132.05-28,239.89

Finding the Fourth Proportional to 30,085.07, 45,132.05 and 28,239.89

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Solution

The fourth proportional to 30,085.07, 45,132.05 and 28,239.89 is: 42,364.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,085.07 : 45,132.05 = 28,239.89 : x
  2. Step 2: Convert to fraction form
    30,085.07/45,132.05 = 28,239.89/x
  3. Step 3: Cross multiply
    30,085.07x = 45,132.05 × 28,239.89
  4. Step 4: Simplify right side
    30,085.07x = 1,274,523,760.61
  5. Step 5: Solve for x
    x = 1,274,523,760.61/30,085.07
  6. Step 6: Final answer
    x = 42,364.00

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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.