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Finding the Fourth Proportional to 84,806.72, 127,210.08 and 28,646.98

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Solution

The fourth proportional to 84,806.72, 127,210.08 and 28,646.98 is: 42,970.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,806.72 : 127,210.08 = 28,646.98 : x
  2. Step 2: Convert to fraction form
    84,806.72/127,210.08 = 28,646.98/x
  3. Step 3: Cross multiply
    84,806.72x = 127,210.08 × 28,646.98
  4. Step 4: Simplify right side
    84,806.72x = 3,644,184,617.56
  5. Step 5: Solve for x
    x = 3,644,184,617.56/84,806.72
  6. Step 6: Final answer
    x = 42,970.47

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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.