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Finding the Fourth Proportional to 56,591.20, 84,886.80 and 19,655.20

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Solution

The fourth proportional to 56,591.20, 84,886.80 and 19,655.20 is: 29,482.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,591.20 : 84,886.80 = 19,655.20 : x
  2. Step 2: Convert to fraction form
    56,591.20/84,886.80 = 19,655.20/x
  3. Step 3: Cross multiply
    56,591.20x = 84,886.80 × 19,655.20
  4. Step 4: Simplify right side
    56,591.20x = 1,668,467,031.36
  5. Step 5: Solve for x
    x = 1,668,467,031.36/56,591.20
  6. Step 6: Final answer
    x = 29,482.80

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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.