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Finding the Fourth Proportional to 30,477.76, 45,590.16 and 28,611.52

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Solution

The fourth proportional to 30,477.76, 45,590.16 and 28,611.52 is: 42,798.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,477.76 : 45,590.16 = 28,611.52 : x
  2. Step 2: Convert to fraction form
    30,477.76/45,590.16 = 28,611.52/x
  3. Step 3: Cross multiply
    30,477.76x = 45,590.16 × 28,611.52
  4. Step 4: Simplify right side
    30,477.76x = 1,304,403,774.64
  5. Step 5: Solve for x
    x = 1,304,403,774.64/30,477.76
  6. Step 6: Final answer
    x = 42,798.54

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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.