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Finding the Fourth Proportional to 35,972.70, 53,959.05 and 30,140.70

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Solution

The fourth proportional to 35,972.70, 53,959.05 and 30,140.70 is: 45,211.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,972.70 : 53,959.05 = 30,140.70 : x
  2. Step 2: Convert to fraction form
    35,972.70/53,959.05 = 30,140.70/x
  3. Step 3: Cross multiply
    35,972.70x = 53,959.05 × 30,140.70
  4. Step 4: Simplify right side
    35,972.70x = 1,626,363,538.34
  5. Step 5: Solve for x
    x = 1,626,363,538.34/35,972.70
  6. Step 6: Final answer
    x = 45,211.05

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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.