Home / 72,887.04-109,328.13-30,191.13

Finding the Fourth Proportional to 72,887.04, 109,328.13 and 30,191.13

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Solution

The fourth proportional to 72,887.04, 109,328.13 and 30,191.13 is: 45,285.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,887.04 : 109,328.13 = 30,191.13 : x
  2. Step 2: Convert to fraction form
    72,887.04/109,328.13 = 30,191.13/x
  3. Step 3: Cross multiply
    72,887.04x = 109,328.13 × 30,191.13
  4. Step 4: Simplify right side
    72,887.04x = 3,300,739,785.49
  5. Step 5: Solve for x
    x = 3,300,739,785.49/72,887.04
  6. Step 6: Final answer
    x = 45,285.69

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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.