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Finding the Fourth Proportional to 53,312.94, 79,980.69 and 20,033.30

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Solution

The fourth proportional to 53,312.94, 79,980.69 and 20,033.30 is: 30,054.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,312.94 : 79,980.69 = 20,033.30 : x
  2. Step 2: Convert to fraction form
    53,312.94/79,980.69 = 20,033.30/x
  3. Step 3: Cross multiply
    53,312.94x = 79,980.69 × 20,033.30
  4. Step 4: Simplify right side
    53,312.94x = 1,602,276,656.91
  5. Step 5: Solve for x
    x = 1,602,276,656.91/53,312.94
  6. Step 6: Final answer
    x = 30,054.18

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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.