Home / 103,689.48-155,533.18-47,513.64

Finding the Fourth Proportional to 103,689.48, 155,533.18 and 47,513.64

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Solution

The fourth proportional to 103,689.48, 155,533.18 and 47,513.64 is: 71,269.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,689.48 : 155,533.18 = 47,513.64 : x
  2. Step 2: Convert to fraction form
    103,689.48/155,533.18 = 47,513.64/x
  3. Step 3: Cross multiply
    103,689.48x = 155,533.18 × 47,513.64
  4. Step 4: Simplify right side
    103,689.48x = 7,389,947,522.58
  5. Step 5: Solve for x
    x = 7,389,947,522.58/103,689.48
  6. Step 6: Final answer
    x = 71,269.98

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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.