Home / 55,490.55-76,574.72-31,615.20

Finding the Fourth Proportional to 55,490.55, 76,574.72 and 31,615.20

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Solution

The fourth proportional to 55,490.55, 76,574.72 and 31,615.20 is: 43,627.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,490.55 : 76,574.72 = 31,615.20 : x
  2. Step 2: Convert to fraction form
    55,490.55/76,574.72 = 31,615.20/x
  3. Step 3: Cross multiply
    55,490.55x = 76,574.72 × 31,615.20
  4. Step 4: Simplify right side
    55,490.55x = 2,420,924,929.67
  5. Step 5: Solve for x
    x = 2,420,924,929.67/55,490.55
  6. Step 6: Final answer
    x = 43,627.70

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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.