Home / 45,428.09-67,796.71-42,420.07

Finding the Fourth Proportional to 45,428.09, 67,796.71 and 42,420.07

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Solution

The fourth proportional to 45,428.09, 67,796.71 and 42,420.07 is: 63,307.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,428.09 : 67,796.71 = 42,420.07 : x
  2. Step 2: Convert to fraction form
    45,428.09/67,796.71 = 42,420.07/x
  3. Step 3: Cross multiply
    45,428.09x = 67,796.71 × 42,420.07
  4. Step 4: Simplify right side
    45,428.09x = 2,875,940,844.99
  5. Step 5: Solve for x
    x = 2,875,940,844.99/45,428.09
  6. Step 6: Final answer
    x = 63,307.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.