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Finding the Fourth Proportional to 63,428, 87,530.64 and 35,135.52

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Solution

The fourth proportional to 63,428, 87,530.64 and 35,135.52 is: 48,487.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,428 : 87,530.64 = 35,135.52 : x
  2. Step 2: Convert to fraction form
    63,428/87,530.64 = 35,135.52/x
  3. Step 3: Cross multiply
    63,428x = 87,530.64 × 35,135.52
  4. Step 4: Simplify right side
    63,428x = 3,075,434,552.33
  5. Step 5: Solve for x
    x = 3,075,434,552.33/63,428
  6. Step 6: Final answer
    x = 48,487.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.