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Finding the Fourth Proportional to 58,449.40, 87,685.10 and 19,017.78

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Solution

The fourth proportional to 58,449.40, 87,685.10 and 19,017.78 is: 28,530.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,449.40 : 87,685.10 = 19,017.78 : x
  2. Step 2: Convert to fraction form
    58,449.40/87,685.10 = 19,017.78/x
  3. Step 3: Cross multiply
    58,449.40x = 87,685.10 × 19,017.78
  4. Step 4: Simplify right side
    58,449.40x = 1,667,575,941.08
  5. Step 5: Solve for x
    x = 1,667,575,941.08/58,449.40
  6. Step 6: Final answer
    x = 28,530.25

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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.