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Finding the Fourth Proportional to 60,297.88, 90,429.54 and 20,312.50

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Solution

The fourth proportional to 60,297.88, 90,429.54 and 20,312.50 is: 30,462.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,297.88 : 90,429.54 = 20,312.50 : x
  2. Step 2: Convert to fraction form
    60,297.88/90,429.54 = 20,312.50/x
  3. Step 3: Cross multiply
    60,297.88x = 90,429.54 × 20,312.50
  4. Step 4: Simplify right side
    60,297.88x = 1,836,850,031.25
  5. Step 5: Solve for x
    x = 1,836,850,031.25/60,297.88
  6. Step 6: Final answer
    x = 30,462.93

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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.