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Finding the Fourth Proportional to 70,017.54, 105,070.08 and 28,464.54

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Solution

The fourth proportional to 70,017.54, 105,070.08 and 28,464.54 is: 42,714.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,017.54 : 105,070.08 = 28,464.54 : x
  2. Step 2: Convert to fraction form
    70,017.54/105,070.08 = 28,464.54/x
  3. Step 3: Cross multiply
    70,017.54x = 105,070.08 × 28,464.54
  4. Step 4: Simplify right side
    70,017.54x = 2,990,771,494.96
  5. Step 5: Solve for x
    x = 2,990,771,494.96/70,017.54
  6. Step 6: Final answer
    x = 42,714.60

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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.