Home / 81,543.51-112,425.90-52,812.42

Finding the Fourth Proportional to 81,543.51, 112,425.90 and 52,812.42

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Solution

The fourth proportional to 81,543.51, 112,425.90 and 52,812.42 is: 72,813.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,543.51 : 112,425.90 = 52,812.42 : x
  2. Step 2: Convert to fraction form
    81,543.51/112,425.90 = 52,812.42/x
  3. Step 3: Cross multiply
    81,543.51x = 112,425.90 × 52,812.42
  4. Step 4: Simplify right side
    81,543.51x = 5,937,483,849.68
  5. Step 5: Solve for x
    x = 5,937,483,849.68/81,543.51
  6. Step 6: Final answer
    x = 72,813.69

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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.