Home / 72,138.12-99,555.66-46,987.62

Finding the Fourth Proportional to 72,138.12, 99,555.66 and 46,987.62

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Solution

The fourth proportional to 72,138.12, 99,555.66 and 46,987.62 is: 64,846.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,138.12 : 99,555.66 = 46,987.62 : x
  2. Step 2: Convert to fraction form
    72,138.12/99,555.66 = 46,987.62/x
  3. Step 3: Cross multiply
    72,138.12x = 99,555.66 × 46,987.62
  4. Step 4: Simplify right side
    72,138.12x = 4,677,883,520.93
  5. Step 5: Solve for x
    x = 4,677,883,520.93/72,138.12
  6. Step 6: Final answer
    x = 64,846.21

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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.