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Finding the Fourth Proportional to 52,323.47, 78,485.20 and 15,387.47

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Solution

The fourth proportional to 52,323.47, 78,485.20 and 15,387.47 is: 23,081.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,323.47 : 78,485.20 = 15,387.47 : x
  2. Step 2: Convert to fraction form
    52,323.47/78,485.20 = 15,387.47/x
  3. Step 3: Cross multiply
    52,323.47x = 78,485.20 × 15,387.47
  4. Step 4: Simplify right side
    52,323.47x = 1,207,688,610.42
  5. Step 5: Solve for x
    x = 1,207,688,610.42/52,323.47
  6. Step 6: Final answer
    x = 23,081.20

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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.