Home / 72,030.45-108,045.69-19,439.93

Finding the Fourth Proportional to 72,030.45, 108,045.69 and 19,439.93

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Solution

The fourth proportional to 72,030.45, 108,045.69 and 19,439.93 is: 29,159.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,030.45 : 108,045.69 = 19,439.93 : x
  2. Step 2: Convert to fraction form
    72,030.45/108,045.69 = 19,439.93/x
  3. Step 3: Cross multiply
    72,030.45x = 108,045.69 × 19,439.93
  4. Step 4: Simplify right side
    72,030.45x = 2,100,400,650.40
  5. Step 5: Solve for x
    x = 2,100,400,650.40/72,030.45
  6. Step 6: Final answer
    x = 29,159.90

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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.