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Finding the Fourth Proportional to 75,639.52, 113,459.28 and 75,530.20

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Solution

The fourth proportional to 75,639.52, 113,459.28 and 75,530.20 is: 113,295.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,639.52 : 113,459.28 = 75,530.20 : x
  2. Step 2: Convert to fraction form
    75,639.52/113,459.28 = 75,530.20/x
  3. Step 3: Cross multiply
    75,639.52x = 113,459.28 × 75,530.20
  4. Step 4: Simplify right side
    75,639.52x = 8,569,602,110.26
  5. Step 5: Solve for x
    x = 8,569,602,110.26/75,639.52
  6. Step 6: Final answer
    x = 113,295.30

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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.