Home / 56,913.37-78,412.29-39,669.55

Finding the Fourth Proportional to 56,913.37, 78,412.29 and 39,669.55

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Solution

The fourth proportional to 56,913.37, 78,412.29 and 39,669.55 is: 54,654.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,913.37 : 78,412.29 = 39,669.55 : x
  2. Step 2: Convert to fraction form
    56,913.37/78,412.29 = 39,669.55/x
  3. Step 3: Cross multiply
    56,913.37x = 78,412.29 × 39,669.55
  4. Step 4: Simplify right side
    56,913.37x = 3,110,579,913.98
  5. Step 5: Solve for x
    x = 3,110,579,913.98/56,913.37
  6. Step 6: Final answer
    x = 54,654.65

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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.