Home / 56,637.68-78,160.29-31,145.69

Finding the Fourth Proportional to 56,637.68, 78,160.29 and 31,145.69

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Solution

The fourth proportional to 56,637.68, 78,160.29 and 31,145.69 is: 42,981.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,637.68 : 78,160.29 = 31,145.69 : x
  2. Step 2: Convert to fraction form
    56,637.68/78,160.29 = 31,145.69/x
  3. Step 3: Cross multiply
    56,637.68x = 78,160.29 × 31,145.69
  4. Step 4: Simplify right side
    56,637.68x = 2,434,355,771.85
  5. Step 5: Solve for x
    x = 2,434,355,771.85/56,637.68
  6. Step 6: Final answer
    x = 42,981.21

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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.