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Finding the Fourth Proportional to 55,423.71, 83,142.70 and 25,430.72

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Solution

The fourth proportional to 55,423.71, 83,142.70 and 25,430.72 is: 38,149.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,423.71 : 83,142.70 = 25,430.72 : x
  2. Step 2: Convert to fraction form
    55,423.71/83,142.70 = 25,430.72/x
  3. Step 3: Cross multiply
    55,423.71x = 83,142.70 × 25,430.72
  4. Step 4: Simplify right side
    55,423.71x = 2,114,378,244.45
  5. Step 5: Solve for x
    x = 2,114,378,244.45/55,423.71
  6. Step 6: Final answer
    x = 38,149.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.