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Finding the Fourth Proportional to 30,158.80, 45,281.40 and 17,036.80

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Solution

The fourth proportional to 30,158.80, 45,281.40 and 17,036.80 is: 25,579.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,158.80 : 45,281.40 = 17,036.80 : x
  2. Step 2: Convert to fraction form
    30,158.80/45,281.40 = 17,036.80/x
  3. Step 3: Cross multiply
    30,158.80x = 45,281.40 × 17,036.80
  4. Step 4: Simplify right side
    30,158.80x = 771,450,155.52
  5. Step 5: Solve for x
    x = 771,450,155.52/30,158.80
  6. Step 6: Final answer
    x = 25,579.60

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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.