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Finding the Fourth Proportional to 63,021.86, 86,970.18 and 34,728.20

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Solution

The fourth proportional to 63,021.86, 86,970.18 and 34,728.20 is: 47,924.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,021.86 : 86,970.18 = 34,728.20 : x
  2. Step 2: Convert to fraction form
    63,021.86/86,970.18 = 34,728.20/x
  3. Step 3: Cross multiply
    63,021.86x = 86,970.18 × 34,728.20
  4. Step 4: Simplify right side
    63,021.86x = 3,020,317,805.08
  5. Step 5: Solve for x
    x = 3,020,317,805.08/63,021.86
  6. Step 6: Final answer
    x = 47,924.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.