Home / 45,307.81-67,820.24-28,642.87

Finding the Fourth Proportional to 45,307.81, 67,820.24 and 28,642.87

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Solution

The fourth proportional to 45,307.81, 67,820.24 and 28,642.87 is: 42,874.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,307.81 : 67,820.24 = 28,642.87 : x
  2. Step 2: Convert to fraction form
    45,307.81/67,820.24 = 28,642.87/x
  3. Step 3: Cross multiply
    45,307.81x = 67,820.24 × 28,642.87
  4. Step 4: Simplify right side
    45,307.81x = 1,942,565,931.47
  5. Step 5: Solve for x
    x = 1,942,565,931.47/45,307.81
  6. Step 6: Final answer
    x = 42,874.86

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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.