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Finding the Fourth Proportional to 84,790.80, 117,002.88 and 47,061

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Solution

The fourth proportional to 84,790.80, 117,002.88 and 47,061 is: 64,939.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,790.80 : 117,002.88 = 47,061 : x
  2. Step 2: Convert to fraction form
    84,790.80/117,002.88 = 47,061/x
  3. Step 3: Cross multiply
    84,790.80x = 117,002.88 × 47,061
  4. Step 4: Simplify right side
    84,790.80x = 5,506,272,535.68
  5. Step 5: Solve for x
    x = 5,506,272,535.68/84,790.80
  6. Step 6: Final answer
    x = 64,939.50

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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.