Home / 42,477.60-63,658.80-30,151.20

Finding the Fourth Proportional to 42,477.60, 63,658.80 and 30,151.20

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Solution

The fourth proportional to 42,477.60, 63,658.80 and 30,151.20 is: 45,185.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,477.60 : 63,658.80 = 30,151.20 : x
  2. Step 2: Convert to fraction form
    42,477.60/63,658.80 = 30,151.20/x
  3. Step 3: Cross multiply
    42,477.60x = 63,658.80 × 30,151.20
  4. Step 4: Simplify right side
    42,477.60x = 1,919,389,210.56
  5. Step 5: Solve for x
    x = 1,919,389,210.56/42,477.60
  6. Step 6: Final answer
    x = 45,185.91

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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.