Home / 76,307.02-114,458.10-20,145.40

Finding the Fourth Proportional to 76,307.02, 114,458.10 and 20,145.40

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Solution

The fourth proportional to 76,307.02, 114,458.10 and 20,145.40 is: 30,217.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,307.02 : 114,458.10 = 20,145.40 : x
  2. Step 2: Convert to fraction form
    76,307.02/114,458.10 = 20,145.40/x
  3. Step 3: Cross multiply
    76,307.02x = 114,458.10 × 20,145.40
  4. Step 4: Simplify right side
    76,307.02x = 2,305,804,207.74
  5. Step 5: Solve for x
    x = 2,305,804,207.74/76,307.02
  6. Step 6: Final answer
    x = 30,217.46

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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.