Home / 55,320.45-76,341.51-31,445.55

Finding the Fourth Proportional to 55,320.45, 76,341.51 and 31,445.55

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Solution

The fourth proportional to 55,320.45, 76,341.51 and 31,445.55 is: 43,394.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,320.45 : 76,341.51 = 31,445.55 : x
  2. Step 2: Convert to fraction form
    55,320.45/76,341.51 = 31,445.55/x
  3. Step 3: Cross multiply
    55,320.45x = 76,341.51 × 31,445.55
  4. Step 4: Simplify right side
    55,320.45x = 2,400,600,769.78
  5. Step 5: Solve for x
    x = 2,400,600,769.78/55,320.45
  6. Step 6: Final answer
    x = 43,394.45

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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.