Home / 55,364.85-76,405.28-31,490.91

Finding the Fourth Proportional to 55,364.85, 76,405.28 and 31,490.91

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Solution

The fourth proportional to 55,364.85, 76,405.28 and 31,490.91 is: 43,458.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,364.85 : 76,405.28 = 31,490.91 : x
  2. Step 2: Convert to fraction form
    55,364.85/76,405.28 = 31,490.91/x
  3. Step 3: Cross multiply
    55,364.85x = 76,405.28 × 31,490.91
  4. Step 4: Simplify right side
    55,364.85x = 2,406,071,638.55
  5. Step 5: Solve for x
    x = 2,406,071,638.55/55,364.85
  6. Step 6: Final answer
    x = 43,458.47

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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.