Home / 72,317.20-99,794.80-42,103.40

Finding the Fourth Proportional to 72,317.20, 99,794.80 and 42,103.40

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Solution

The fourth proportional to 72,317.20, 99,794.80 and 42,103.40 is: 58,100.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,317.20 : 99,794.80 = 42,103.40 : x
  2. Step 2: Convert to fraction form
    72,317.20/99,794.80 = 42,103.40/x
  3. Step 3: Cross multiply
    72,317.20x = 99,794.80 × 42,103.40
  4. Step 4: Simplify right side
    72,317.20x = 4,201,700,382.32
  5. Step 5: Solve for x
    x = 4,201,700,382.32/72,317.20
  6. Step 6: Final answer
    x = 58,100.98

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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.