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Finding the Fourth Proportional to 52,990.61, 79,485.71 and 13,547.66

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Solution

The fourth proportional to 52,990.61, 79,485.71 and 13,547.66 is: 20,321.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,990.61 : 79,485.71 = 13,547.66 : x
  2. Step 2: Convert to fraction form
    52,990.61/79,485.71 = 13,547.66/x
  3. Step 3: Cross multiply
    52,990.61x = 79,485.71 × 13,547.66
  4. Step 4: Simplify right side
    52,990.61x = 1,076,844,908.77
  5. Step 5: Solve for x
    x = 1,076,844,908.77/52,990.61
  6. Step 6: Final answer
    x = 20,321.43

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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.