Home / 52,139.40-71,962.34-30,930.36

Finding the Fourth Proportional to 52,139.40, 71,962.34 and 30,930.36

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Solution

The fourth proportional to 52,139.40, 71,962.34 and 30,930.36 is: 42,689.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,139.40 : 71,962.34 = 30,930.36 : x
  2. Step 2: Convert to fraction form
    52,139.40/71,962.34 = 30,930.36/x
  3. Step 3: Cross multiply
    52,139.40x = 71,962.34 × 30,930.36
  4. Step 4: Simplify right side
    52,139.40x = 2,225,820,927.99
  5. Step 5: Solve for x
    x = 2,225,820,927.99/52,139.40
  6. Step 6: Final answer
    x = 42,689.81

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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.